C[N+](C)(C)CC(=O)N/N=C(/Cc1nc2ccc([N+](=O)[O-])cc2nc1O)C(=O)Nc1cc(C(F)(F)F)ccc1Cl.[Cl-]
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?