COc1cc(OC)c(/C=C2\N=C(C)N(Nc3nnc(NN4C(=O)/C(=C/c5c(OC)cc(OC)cc5OC)N=C4C)c4ccccc34)C2=O)c(OC)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?