C=C1C(=O)O[C@H]2[C@@H](O)/C(C)=C/C(=O)/C=C(/C)C[C@H](OC(=O)/C(C)=C/C)[C@@H]12
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?