Using O=C1CCC(=O)N1Br, CCCCOC(=O)c1ncc2ccc(S(=O)(=O)c3ccccc3)cc2c1O to produce CCCCOC(=O)c1nc(Br)c2ccc(S(=O)(=O)c3ccccc3)cc2c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.