CCOC(=O)C1CCCN(C2CC(=O)N(c3ccc(N4C(=O)CC(N5CCCC(C(=O)OCC)C5)C4=O)cc3)C2=O)C1
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?