C=CC[C@@H](CC(=O)N[C@@H](CO)Cc1ccccc1)C(=O)N[C@@H](COC(=O)[C@H](CC=C)CC(=O)OC(C)(C)C)Cc1c[nH]c2ccccc12
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?