Using O=C(NC1CCCC(C(=O)O)C1)OCc1ccccc1, Cn1c(=O)c(N)c(N)c2cccnc21 to produce Cn1c(=O)c(NC(=O)C2CCCC(NC(=O)OCc3ccccc3)C2)c(N)c2cccnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.