Using C1=C(c2c[nH]c3ccccc23)CCNC1, CSc1nc(C)c(CCCl)c(=O)n1C to produce CSc1nc(C)c(CCN2CC=C(c3c[nH]c4ccccc34)CC2)c(=O)n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.