CCOC(=O)[C@@H]1[C@H]2COc3cc(OC)ccc3[C@@H]2N2C(=O)N(c3cccc(C)c3)C(=O)[C@@]12C
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?