Using O=C(N1CCc2ccc(Br)c(O)c2CC1)C(F)(F)F, O=C([O-])[O-] to produce COc1c(Br)ccc2c1CCN(C(=O)C(F)(F)F)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.