COC(=O)[C@@H](NC(=O)N(Cc1ccccc1)C[C@H](CC(C)C)NC(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)C)C(C)C
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?