C[N+](C)(C)CC(=O)N/N=C(/Cc1nc2ccc(Cl)cc2nc1O)C1=NS(=O)(=O)c2cc(S(N)(=O)=O)c(Cl)cc2N1.[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?