COc1ccc(CNC(=O)C2CCN(S(=O)(=O)c3ccc4nc5c(c(C(=O)O)c4c3)CC(C)CC5)CC2)cc1
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?