Using CC[Si](CC)(CC)O[C@H]1C[C@@H](Oc2nc3nc(-c4ccc(-c5ccccc5)cc4)c(Cl)cc3n2COCC[Si](C)(C)C)CO[C@@H]1CO to produce CC[Si](CC)(CC)O[C@H]1C[C@@H](Oc2nc3nc(-c4ccc(-c5ccccc5)cc4)c(Cl)cc3n2COCC[Si](C)(C)C)CO[C@@H]1C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.