Using Cc1cc2c(c3c1NC(=O)CC3)OC(CNNC(=O)OCc1ccccc1)C2 to produce Cc1cc2c(c3c1NC(=O)CC3)OC(CNN)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.