Using OCc1ccccc1, CC(C)(C)OC(=O)NCCCC[C@H](NC(=O)OCC1c2ccccc2-c2ccccc21)C(=O)O to produce CC(C)(C)OC(=O)NCCCC[C@H](NC(=O)OCC1c2ccccc2-c2ccccc21)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.