CC(=O)Nc1ccc(OC(=O)N2CCN(/[N+]([O-])=N/Oc3ccc([N+](=O)[O-])cc3[N+](=O)[O-])CC2)cc1
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?