Using [NH4+], N#Cc1nn(CCC(F)(F)C(F)(F)F)c2cc(Cl)ccc12 to produce N=C(N)c1nn(CCC(F)(F)C(F)(F)F)c2cc(Cl)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.