Using C[Si](C)(C)Cl, CCCc1nccn1-c1nc(N)nc2c1ncn2[C@@H]1O[C@H](COC(C)=O)[C@@H](OC(C)=O)[C@H]1OC(C)=O to produce CCCc1nccn1-c1nc(Cl)nc2c1ncn2[C@@H]1O[C@H](COC(C)=O)[C@@H](OC(C)=O)[C@H]1OC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.