Using CC(C)(C)[Si](C)(C)O[C@@H]1COC2C1OC[C@H]2Oc1nc2nc(-c3nc4c(C5CC5)nccc4s3)c(Cl)cc2[nH]1 to produce O[C@@H]1CO[C@H]2[C@@H]1OC[C@H]2Oc1nc2nc(-c3nc4c(C5CC5)nccc4s3)c(Cl)cc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.