Cc1ccc(C2=NO[C@H]3C(=O)N(c4ccc(Cc5ccc(N6C(=O)[C@H]7ON=C(c8ccc(C)cc8)[C@H]7C6=O)cc5)cc4)C(=O)[C@@H]23)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?