Using On1nnc2cccnc21, O=C(OCc1ccccc1)N1OC2(C(=O)O)C=CC1CC2 to produce NC(=O)C12C=CC(CC1)N(C(=O)OCc1ccccc1)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.