Cc1ccc(C(=O)N2CC3(C(C)C)CN(C(=O)c4ccc(C)cc4)CC(C(C)C)(C2)C3=O)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?