O=C(N/N=C1/C[C@@H](O)[C@@H](O)[C@H]2[C@@H]1CC[C@H]1C(=O)N(c3ccc(F)cc3F)C(=O)[C@H]21)OCc1ccccc1
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?