COc1cc(/C=N/Nc2nc3c(c(=O)n(C)c(=O)n3C)n2Cc2ccccc2)ccc1OC(=O)c1ccco1
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?