O=c1[nH]c(=O)n(-c2ccc(F)cc2)c2c1C(C(F)(F)F)(C(F)(F)F)NC(c1ccc(F)cc1)=N2
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?