Using NC1(c2ccccc2)Cc2ccccc2C1, O=C(O)CNC(=O)OCc1ccccc1 to produce O=C(CNC(=O)OCc1ccccc1)NC1(c2ccccc2)Cc2ccccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.