Cc1ccc(CN2CCC(CNC(=O)c3cnn(-c4ccccc4Cl)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?