O=C1CC(C(OCc2ccccc2)C(OCc2ccccc2)C(OCc2ccccc2)C(COCc2ccccc2)OCc2ccccc2)CC(=O)N1
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?