CCN(CC)CCN1C(=O)C2C(C(=O)Nc3cccc(C)c3)C3C=CC2(O3)C1C(=O)NC1CCCC(C)C1C
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?