Using O=C(Nc1nccc2ccc(C(F)(F)F)cc12)OCc1ccccc1, COC(=O)CBr to produce COC(=O)CN(C(=O)OCc1ccccc1)c1nccc2ccc(C(F)(F)F)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.