code: def correct_mol(x):
      mol = x
      while True:
          flag, atomid_valence = check_valency(mol)
          if flag:
              break
          else:
              assert len(atomid_valence) == 2
              idx = atomid_valence[0]
              queue = []
              for b in mol.GetAtomWithIdx(idx).GetBonds():
                  queue.append(
                      (
                          b.GetIdx(),
                          int(b.GetBondType()),
                          b.GetBeginAtomIdx(),
                          b.GetEndAtomIdx(),
                      )
                  )
              queue.sort(key=lambda tup: tup[1], reverse=True)
              if len(queue) > 0:
                  start = queue[0][2]
                  end = queue[0][3]
                  t = queue[0][1] - 1
                  mol.RemoveBond(start, end)
                  if t >= 1:
                      mol.AddBond(start, end, bond_decoder_m[t])
      return mol
  
imports: import re
  import numpy
  from rdkit import Chem
label_desc: Use image node_id 3 for calling a global function with example usage: correct_mol(x) and returns: mol