CC1=C(C(=O)N(C)C)CC(CC(=O)NCCN2CCOCC2)C(=O)N1Cc1ccc(C(C)(C)C)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?