CC(=O)OCC1OC(n2c(-c3ccc(C)cc3)cc(-c3ccco3)c(C#N)c2=O)C(OC(C)=O)C(OC(C)=O)C1OC(C)=O
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?