CC(=O)OCC1OC(ON=C2CC(O)C(O)C3C2CCC2C(=O)N(Cc4ccccc4)C(=O)C23)C(OC(C)=O)C(OC(C)=O)C1OC(C)=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?