text: from dataclasses import make_dataclass
  from typing import Dict, List
  
  NAMES: List[str] = [
      "ppMEKc",
      "CREBn",
      "pCREBn",
      "ERKc",
      "ERKn",
      "pERKc",
      "pERKn",
      "ppERKc",
      "ppERKn",
      "Elk1n",
      "pElk1n",
      "cFOSc",
      "cFOSn",
      "pcFOSc",
      "pcFOSn",
      "DUSPc",
      "DUSPn",
      "pDUSPc",
      "pDUSPn",
      "DUSPn_ERKn",
      "DUSPn_pERKn",
      "DUSPn_ppERKn",
      "pDUSPn_ERKn",
      "pDUSPn_pERKn",
      "pDUSPn_ppERKn",
      "RSKc",
      "pRSKc",
      "pRSKn",
      "PrecfosmRNAn",
      "PreduspmRNAn",
      "cfosmRNAc",
      "duspmRNAc",
      "Fc",
      "Fn",
      "FmRNAc",
      "PreFmRNAn",
  ]
  
  NUM: int = len(NAMES)
  
  Species = make_dataclass(
      cls_name="Species",
      fields=[(name, int) for name in NAMES],
      namespace={"NAMES": NAMES, "NUM": NUM},
      frozen=True,
  )
  
  name2idx: Dict[str, int] = {k: v for v, k in enumerate(NAMES)}
  
  V = Species(**name2idx)
  
  del name2idx
  