COc1ccc(C#Cc2cccc(-c3nc(C(=O)N4CCN(C)CC4)cc4c3[C@H](CCO)N([S+]([O-])C(C)(C)C)C4)c2)cc1OC
Hydrogen bond acceptor: The atom, ion, or molecule component of a hydrogen bond which does not supply the bridging (shared) hydrogen atom. How many hydrogen bond acceptors does the molecule have?