code: def test_chem_illegal_character():
      smiles = "O=C(c1ccc(F)cc1)C1CCN(CCC2Cc3cc(F)ccc3C2=O)CC1*"
      target = "MEILCEDNISLSSIPNSLM*QLGDGPRL"
      drug_encoding = integer_label_smiles(smiles)
      target_encoding = integer_label_protein(target)
      assert drug_encoding.size == 85
      assert target_encoding.size == 1200
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_chem_illegal_character() without return types