COc1ccc(C2=NN(C(=O)c3ccccc3)C(c3ccc(OC)c(OC)c3)C2)c(OC(C)=O)c1
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?