Cc1ccc([N+](=O)[O-])cc1S(=O)(=O)Nc1ccc(C2=NN(c3ccc([N+](=O)[O-])cc3[N+](=O)[O-])C(c3cccs3)C2)cc1
All atoms other than hydrogen are referred to be heavy atoms. How many heavy atoms are there in the molecule?