N=C(N)N/N=C/c1oc(-c2ccc(S(=O)(=O)O)o2)c(-c2ccc(S(=O)(=O)O)o2)c1[N+](=O)[O-]
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?