Using O=C(CBr)OCc1ccccc1, COC(=O)[C@H](CCC(=O)OC(C)(C)C)NC(=O)c1cc(O)c2ccccc2n1 to produce COC(=O)[C@H](CCC(=O)OC(C)(C)C)NC(=O)c1cc(OCC(=O)OCc2ccccc2)c2ccccc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.