CC[C@@]12C(=O)N(c3cccc(Cl)c3)C(=O)N1[C@H](c1ccc(Br)cc1)[C@@H]1C(=O)N(C(C)(C)C)C(=O)[C@@H]12
How many heavy atoms like carbon, oxygen, nitrogen, sulfur and other non-hydrogen atoms do the molecule contain?