Cc1ccc(-n2ncc(C(=O)N3CCN(c4cc(Cl)ccc4C)CC3)c2C2CCN(C(=O)OC(C)(C)C)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?