COC(=O)[C@H](CCCCNC(=O)OC(C)(C)C)n1cc(-c2cc(C(=O)N3CCN(C(=O)OC(C)(C)C)CC3)cc(-c3cn([C@@H](CC(C)C)C(=O)OC(C)(C)C)nn3)c2)nn1
All atoms other than hydrogen are referred to be heavy atoms. How many heavy atoms are there in the molecule?