Using O=C(NC1Cc2cc(C(F)(F)F)ccc2N(Cc2ccccc2)C1)OCc1ccccc1 to produce NC1Cc2cc(C(F)(F)F)ccc2N(Cc2ccccc2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.