Using CC[C@@H]1C(N)=Nc2cnc(Cl)nc2N1C1CCCC1, O=CCCl to produce CC[C@@H]1c2nccn2-c2cnc(Cl)nc2N1C1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.