Using CO[C@@H]1C[C@H](C(=O)Nc2ccc(N3CCOCC3=O)cc2)N(C(=O)OC(C)(C)C)C1, COC(=O)CBr to produce COC(=O)CN(C(=O)[C@H]1C[C@@H](OC)CN1C(=O)OC(C)(C)C)c1ccc(N2CCOCC2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.