terraform dots in var names?

read-from-remote.json

{
  "data": {
    "terraform_remote_state": {
      "networking-int": {
        "backend": "gcs",
        "config": {
          "bucket": "networking-int",
          "path": "terraform.tfstate",
          "region": "us-east1",
          "project": "networking-int"
        }
      }
    }
  },
  "output": {
    "Bucket[networking-test-bucket].self_link": {
      "value": "${data.terraform_remote_state.networking-int.Bucket[networking-test-bucket].self_link}", // nope
      "value": "${data.terraform_remote_state.networking-int[Bucket[networking-test-bucket].self_link]}", // nope
      "value": "${data.terraform_remote_state.networking-int[\"Bucket[networking-test-bucket].self_link\"]}", // also nope
      "value": "${data.terraform_remote_state.networking-int.[\"Bucket[networking-test-bucket].self_link\"]}", // nope
      "value": "${data.terraform_remote_state.networking-int.\"Bucket[networking-test-bucket].self_link\"}", // nope
      "value": "${element(data.terraform_remote_state.networking-int.*, index(data.terraform_remote_state.networking-int.*, \"Bucket[networking-test-bucket].self_link\"))}", //nope
      "value": "${lookup(data.terraform_remote_state.networking-int.Bucket, \"Bucket[networking-test-bucket].self_link\")}" //nope
    }
  }
}

remote.output.json

[...]
  "output": {
    "Bucket[networking-test-bucket].self_link": {
      "value": "${google_storage_bucket.networking-test-bucket.self_link}"
    },
    "Bucket[networking-test-bucket].url": {
      "value": "${google_storage_bucket.networking-test-bucket.url}"
    }
  },
[...]