COc1ccc(C[C@H]2CN3C(=NC[C@@H]3Cc3ccc(O)cc3)N2CCNC(=O)c2ccc(C)c(Br)c2)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?