Using CC(C)(C)OC(=O)NCc1ccccc1Br, C/C=C/C(=O)OCC to produce CCOC(=O)C=C(C)c1ccccc1CNC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.