CC(C)C[C@@H](CC(=O)N[C@@H](CCCN)CC(=O)N[C@@H]1CCNC[C@H]1C(=O)N[C@H](CC(=O)N[C@@H](CCC(=O)O)CC(=O)O)Cc1c[nH]c2ccccc12)NC(=O)[C@@H]1CCCC[C@H]1N
Heavy atom refers to any atom that is not hydrogen. How many heavy atoms do the molecule have?