code: def sanitize(mol):
      try:
          smiles = get_smiles(mol)
          mol = get_mol(smiles)
      except Exception as e:
          return None
      return mol
  
imports: import rdkit
  import rdkit.Chem
  from scipy.sparse import csr_matrix
  from scipy.sparse.csgraph import minimum_spanning_tree
  from collections import defaultdict
  from rdkit.Chem.EnumerateStereoisomers import EnumerateStereoisomers, StereoEnumerationOptions
  from .vocab import Vocab
label_desc: Use image node_id 5 for calling a global function with example usage: sanitize(mol) and returns: mol, None