Using O=S(=O)([O-])CCS, O=C1c2ccccc2C(=O)c2oc(Br)cc21 to produce CSc1cc2c(o1)C(=O)c1ccccc1C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.