COC(=O)[C@H]1C[C@H](OC(=O)NC2CC2)[C@@]2(O)CN(S(=O)(=O)c3ccc(C)cc3)CC2[C@H]1C(=O)OC
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?