code: def atom_equal(a1, a2):
      return (
          a1.GetSymbol() == a2.GetSymbol()
          and a1.GetFormalCharge() == a2.GetFormalCharge()
      )
  
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 10 for calling a global function with example usage: atom_equal(a1, a2) and returns: unknown