CC(=O)O.O=C(CCN1CCCCC1CCO)Nc1ccc2c(c1)C(=O)c1ccc(NC(=O)CCN3CCCCC3CCO)cc1C2=O
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?