Using COC(=O)c1cc2occc2n1C(=O)OC(C)(C)C, O=C1CCC(=O)N1Br to produce COC(=O)c1cc2oc(Br)cc2n1C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.