CC(=O)O/C(=C(/C#N)C(=O)O)C1C(C(=O)O)C(c2ccccc2[N+](=O)[O-])C=C(c2ccco2)N1c1ccncc1
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?