COc1ccc(CCN2CCC(CNC(=O)c3cnn(-c4cccc(Cl)c4)c3C3CCN(C(=O)OC(C)(C)C)CC3)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?