CC[C@H](C)[C@H](N)C(=O)N[C@@H](CCCCN)C(=O)N[C@H](C(=O)N[C@@H](C)C(=O)N[C@H](C(=O)O)C(C)C)C(C)C
How many heavy atoms like carbon, oxygen, nitrogen, sulfur and other non-hydrogen atoms do the molecule contain?