Using COc1ccc(N2CCN(Cc3c[nH]c4ncccc34)CC2)cc1, CI to produce COc1ccc(N2CCN(Cc3cn(C)c4ncccc34)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.