COc1ccc(C2C(C#N)=C(N)OC3=C2C(=O)CC(C)(C)C3)cc1Cn1cc([N+](=O)[O-])cn1
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?