Using CC(C)(C)OC(=O)N[C@@H]1C=C[C@H](CBr)C1, CCOC(=O)CC(=O)OCC to produce CCOC(=O)C(C[C@@H]1C=C[C@H](NC(=O)OC(C)(C)C)C1)C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.