Using COC(=O)c1c(N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)ccc(Br)c1OS(=O)(=O)c1ccc(C)cc1 to produce COC(=O)c1c(N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)ccc(Br)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.