CCOC(=O)[C@@H]1[C@H]2COc3ccc(Br)cc3[C@H]2N2C(=O)N(c3cccc(C)c3)C(=O)[C@]12C
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?