COc1ccc(CCN2CCC(CNC(=O)c3cnn(-c4cccc(Cl)c4)c3C3CCN(C(=O)OC(C)(C)C)CC3)CC2)cc1
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?