Using O=C(NC1CNCC(c2ccc(OC(F)(F)F)cc2)C1)c1ccccc1, O=C(O)c1ccncc1 to produce O=C(NC1CC(c2ccc(OC(F)(F)F)cc2)CN(C(=O)c2ccncc2)C1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.