C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)[C@H](CCCCN)n3cc(CCCC)nn3)CC2)nc(N2CCN(C(=O)[C@H]([C@@H](C)O)n3cc(CCCCN)nn3)CC2)n1.Cl
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?