Cc1cc2[nH]c3c(C#N)c(-c4ccccc4)c(/C=N/c4cccc(C(F)(F)F)c4)c(=O)n3c2cc1C
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?