Using COC(=O)c1ccc2c(c1)N(C(=O)OC(C)(C)C)C(Br)C(Br)O2 to produce COC(=O)c1ccc2c(c1)N(C(=O)OC(C)(C)C)C=CO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.