CC[C@]12c3[nH]c4ccc(Cl)cc4c3CCN1C(=O)[C@@H](CC(=O)NCCCOC)C[C@@H]2C(=O)N1CCN(C(=O)c2ccco2)CC1
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?