COc1ccc(-c2c3c(n(C4OC(COC(C)=O)C(OC(C)=O)C(OC(C)=O)C4OC(C)=O)c(=S)c2C#N)CCCC3)cc1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?