Using O=C(O)Cc1cc2c3c(c1)C(c1ccccc1)CCN3CCC2c1ccccc1, CCN to produce CCNC(=O)Cc1cc2c3c(c1)C(c1ccccc1)CCN3CCC2c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.