Using O=C1CCCc2cc(S(=O)(=O)c3ccccc3)ccc21, CCOC(=O)C(C)Br to produce COC(=O)CC1(O)CCCc2cc(S(=O)(=O)c3ccccc3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.