Definition of beamer class for orgmode export

gistfile1.el

("beamer" "\\documentclass[xcolor=dvipsnames]{beamer}
  \\usepackage[utf8]{inputenc}
  \\usepackage{graphicx}
  \\setbeamertemplate{navigation symbols}{}
  \\usetheme{Ilmenau}
  \\usecolortheme[named\=MidnightBlue]{structure}
  \\beamersetuncovermixins{\\opaqueness<1>{25}}{\\opaqueness<2->{15}}
  \\setbeamertemplate{footline}[frame number]"
  ("\\section{%s}" . "\\section{%s}")
  ("\\begin{frame}\\frametitle{%s}"
    "\\end{frame}"
    "\\begin{frame}\\frametitle{%s}"
    "\\end{frame}"
  )
)