Using O=C(OCc1ccccc1)C1(N=C(c2ccccc2)c2ccccc2)CC2CCC(C1)O2 to produce NC1(C(=O)OCc2ccccc2)CC2CCC(C1)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.