CCOc1ccc(N2C(=O)/C(=C\c3ccc(OC)c(O)c3)S(=O)(=O)C2c2cccc([N+](=O)[O-])c2)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?