CNC(=O)CCC(=O)N[C@@H](Cc1ccccc1)[C@H](O)CN(CC1CC1)S(=O)(=O)c1cccc(OC)c1
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?