COC(=O)C1=C(C(=O)OC)[C@@H]2N(C)c3ccccc3[C@@]23C[C@@H](C(=O)OC)N(S(=O)(=O)c2ccc(OC)cc2)C3=N1
All atoms other than hydrogen are referred to be heavy atoms. How many heavy atoms are there in the molecule?