Using O=Cc1ccc2c(n1)NC(=O)CO2, COc1ccc2c(c1)N(CCN1CCC(N)CC1)C(=O)CO2 to produce COc1ccc2c(c1)N(CCN1CCC(NCc3ccc4c(n3)NC(=O)CO4)CC1)C(=O)CO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.