COc1cc(C(=O)C2CC3(CCC2(O)c2cc(OC)c(OC)c(OC)c2)CC(=O)Nc2ccccc2C3=O)cc(OC)c1OC
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?