Using O=C1NC(=O)c2ccccc21, Cn1nc2c(N)nc3c(c2c1CCCCCl)CCCC3 to produce Cn1nc2c(N)nc3c(c2c1CCCCN1C(=O)c2ccccc2C1=O)CCCC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.