Using O=S(=O)(OCC(F)(F)F)C(F)(F)F, Cc1ccc2[nH]c(=O)ccc2c1Br to produce Cc1ccc2c(ccc(=O)n2CC(F)(F)F)c1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.