CC1=C(C(=O)Nc2cc(=O)n(C)c(=O)n2C)C(c2ccc([N+](=O)[O-])cc2)C(C(=O)Nc2cc(=O)n(C)c(=O)n2C)=C(C)N1
All atoms other than hydrogen are referred to be heavy atoms. How many heavy atoms are there in the molecule?