Cc1nn(Cc2c(F)c(F)c(F)c(F)c2F)c(C)c1NC(=O)c1c(-c2ccccc2)nn(-c2ccccc2)c1C
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?