COC(=O)Cn1c(C(=O)N(C)C)cc2c1C[C@H]1CN(C(=O)c3ccccc3)[C@@](Cc3ccc(F)cc3)(C(=O)OC)[C@@H]21
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?