COC(=O)[C@H](Cc1ccccc1)NC(=O)O[C@@H]1C(=O)c2cc(Br)ccc2O[C@H]1c1ccc2c(c1)OCO2
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?