Cc1nc(-c2nc(C)c(C(=O)/C=C/c3ccc([N+](=O)[O-])cc3)s2)sc1C(=O)/C=C/c1ccc([N+](=O)[O-])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?