C=C1C(=O)O[C@H]2C1[C@H](OC(=O)/C(C)=C\COC(C)=O)C[C@]1(CO1)[C@@H]1[C@H](O)[C@H]3O[C@@]3(C)[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?