Using O=C(CCl)N1CCCCC1, COC(=O)c1nc2[nH]ccn2c(=O)c1OC(C)=O to produce COC(=O)c1nc2n(CC(=O)N3CCCCC3)ccn2c(=O)c1OC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.