strange throgh-hole IC

mystery_chip.kicad_mod

(module mystery_chip (layer F.Cu) (tedit 5E34700A)
  (fp_text reference REF** (at 1.642 -11.18) (layer F.SilkS)
    (effects (font (size 1 1) (thickness 0.15)))
  )
  (fp_text value mystery_chip (at 1.642 -12.18) (layer F.Fab)
    (effects (font (size 1 1) (thickness 0.15)))
  )
  (fp_line (start -22.1 -13.5) (end 22.1 -13.5) (layer F.CrtYd) (width 0.12))
  (fp_line (start 22.1 -13.5) (end 22.1 13.5) (layer F.CrtYd) (width 0.12))
  (fp_line (start 22.1 13.5) (end -22.1 13.5) (layer F.CrtYd) (width 0.12))
  (fp_line (start -22.1 13.5) (end -22.1 -13.5) (layer F.CrtYd) (width 0.12))
  (fp_line (start -22.1 -1.7) (end -22.1 -13.5) (layer F.SilkS) (width 0.15))
  (fp_line (start -22.1 -13.5) (end 22.1 -13.5) (layer F.SilkS) (width 0.15))
  (fp_line (start 22.1 -13.5) (end 22.1 -1.7) (layer F.SilkS) (width 0.15))
  (fp_arc (start -22.1 0) (end -22.1 -1.7) (angle 180) (layer F.SilkS) (width 0.15))
  (fp_arc (start 22.1 0) (end 22.1 1.7) (angle 180) (layer F.SilkS) (width 0.15))
  (fp_line (start 22.1 13.5) (end -22.1 13.5) (layer F.SilkS) (width 0.15))
  (fp_line (start 22.1 1.7) (end 22.1 13.5) (layer F.SilkS) (width 0.15))
  (fp_line (start -22.1 13.5) (end -22.1 1.7) (layer F.SilkS) (width 0.15))
  (pad 20 thru_hole oval (at -19.422 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 19 thru_hole oval (at -17.644 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 18 thru_hole oval (at -15.113 -11.68) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 17 thru_hole oval (at -13.335 -11.68) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 14 thru_hole oval (at -6.223 -11.68) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 13 thru_hole oval (at -4.445 -11.68) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 16 thru_hole oval (at -10.532 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 15 thru_hole oval (at -8.754 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 10 thru_hole oval (at 2.667 -11.68) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 12 thru_hole oval (at -1.778 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 11 thru_hole oval (at 0 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 9 thru_hole oval (at 4.445 -11.68) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 1 thru_hole oval (at 20.447 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 21 thru_hole circle (at 19.24 15.78) (size 3 3) (drill 1.8) (layers *.Cu *.Mask))
  (pad 22 thru_hole circle (at 15.24 15.78) (size 3 3) (drill 1.8) (layers *.Cu *.Mask))
  (pad 23 thru_hole circle (at 11.24 15.78) (size 3 3) (drill 1.8) (layers *.Cu *.Mask))
  (pad 24 thru_hole circle (at 3.62 15.78) (size 3 3) (drill 1.8) (layers *.Cu *.Mask))
  (pad 25 thru_hole circle (at -4 15.78) (size 3 3) (drill 1.8) (layers *.Cu *.Mask))
  (pad 26 thru_hole circle (at -11.62 15.78) (size 3 3) (drill 1.8) (layers *.Cu *.Mask))
  (pad 27 thru_hole circle (at -19.24 15.78) (size 3 3) (drill 1.8) (layers *.Cu *.Mask))
  (pad 2 thru_hole oval (at 18.669 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 3 thru_hole oval (at 16.891 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 4 thru_hole oval (at 15.113 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 5 thru_hole oval (at 13.335 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 6 thru_hole oval (at 11.557 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 7 thru_hole oval (at 9.779 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
  (pad 8 thru_hole oval (at 8.001 -15.78) (size 1.3 2) (drill oval 0.9 1.6) (layers *.Cu *.Mask))
)