CC(C)(C)OC(=O)NCCCC[C@H](NC(=O)c1nc[nH]c1C(=O)N[C@@H](CCCCNC(=O)OC(C)(C)C)C(=O)OC(C)(C)C)C(=O)OC(C)(C)C
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?