C#CCCCO/N=C1\[C@@H]2CCn3c(=O)n(Cc4cc5c(cc4Cl)OCO5)c(=O)n3[C@H]2[C@H](O)[C@H]2O[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?