Using CC1CCN(c2c3c(oc(=O)c2C#N)-c2ccccc2C3)CC1 to produce CC1CCN(c2c(C#N)c3c(c4c2Cc2ccccc2-4)-c2ccccc2C3)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.