Using O=C1CCCC2(CCN(c3cnc4ccccc4n3)CC2)N1Cc1cccc2[nH]ccc12, CI to produce Cn1ccc2c(CN3C(=O)CCCC34CCN(c3cnc5ccccc5n3)CC4)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.