code: def write_molecule(mol, outfile, is_protein=False):
      """Write molecule to a file
  
      This function writes a representation of the provided molecule to
      the specified `outfile`. Doesn't return anything.
  
      Parameters
      ----------
      mol: rdkit Mol
          Molecule to write
      outfile: str
          Filename to write mol to
      is_protein: bool, optional
          Is this molecule a protein?
  
      Note
      ----
      This function requires RDKit to be installed.
  
      Raises
      ------
      ValueError: if `outfile` isn't of a supported format.
      """
      from rdkit import Chem
  
      if ".pdbqt" in outfile:
          writer = Chem.PDBWriter(outfile)
          writer.write(mol)
          writer.close()
          if is_protein:
              convert_protein_to_pdbqt(mol, outfile)
          else:
              convert_mol_to_pdbqt(mol, outfile)
      elif ".pdb" in outfile:
          writer = Chem.PDBWriter(outfile)
          writer.write(mol)
          writer.close()
      elif ".sdf" in outfile:
          writer = Chem.SDWriter(outfile)
          writer.write(mol)
          writer.close()
      else:
          raise ValueError("Unsupported Format")
  
imports: import os
  import logging
  import itertools
  import numpy
  from io import StringIO
  from deepchem.utils.pdbqt_utils import pdbqt_to_pdb
  from deepchem.utils.pdbqt_utils import convert_mol_to_pdbqt
  from deepchem.utils.pdbqt_utils import convert_protein_to_pdbqt
  from deepchem.utils.geometry_utils import compute_pairwise_distances
  from deepchem.utils.geometry_utils import compute_centroid
  from deepchem.utils.fragment_utils import MolecularFragment
  from deepchem.utils.fragment_utils import MoleculeLoadException
  from typing import Any, List, Sequence, Tuple, Set, Optional, Dict, Union
  from deepchem.utils.typing import OneOrMany, RDKitMol
label_desc: Use image node_id 7 for calling a global function with example usage: write_molecule(mol, outfile, is_protein) without return types