C[C@H]1CN([C@@H](C)CO)C(=O)c2cccc(NS(=O)(=O)c3ccc(Cl)cc3)c2O[C@@H]1CN(C)CC1CCCCC1
Heavy atom refers to any atom that is not hydrogen. The heavy atoms in molecules are carbon, oxygen, nitrogen, and sulfur. How many heavy atoms are in the molecule?