Using O=C1CCC(=O)N1Br, Cc1cn(S(=O)(=O)c2ccccc2)c(=O)c2ccc(Br)cc12 to produce O=c1c2ccc(Br)cc2c(CBr)cn1S(=O)(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.