Using COC(=O)[C@H]1C[C@H](O)CN(C(=O)OC)[C@@H]1C(=O)N1CCN(c2ccccc2)CC1, CC(C)(C)OC(=O)CBr to produce COC(=O)[C@H]1C[C@H](OCC(=O)OC(C)(C)C)CN(C(=O)OC)[C@@H]1C(=O)N1CCN(c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.