CC(=O)OC[C@@H](OC(C)=O)[C@@H](OC(C)=O)[C@H]1OC[C@@H]2C[C@H]([C@H]1OC(C)=O)N(Cc1ccccc1)O2
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?