CC(C)CC(NC(=O)C(Cc1ccccc1)NC(=O)C(Cc1ccccc1)NC(=O)OC(C)(C)C)C(=O)OCc1ccccc1
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?