Using O=C(NC(CO)c1ccc(-c2ccc(SC(F)F)cc2)cc1)c1ccccc1 to produce NC(CO)c1ccc(-c2ccc(SC(F)F)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.