COc1ccc(C(C(=O)NC2CCCCC2)N(C(=O)Cc2c[nH]c3ccccc23)c2ccc(NC(C)=O)cc2)cc1OC
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?