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)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?