Using O=Cc1ccc2c(n1)NC(=O)CO2, COc1ccc2ncc(=O)n(CCN3CCC(N)CC3)c2c1 to produce COc1ccc2ncc(=O)n(CCN3CCC(NCc4ccc5c(n4)NC(=O)CO5)CC3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.