Using CC(C)(C)[Si](C)(C)OC[C@H]1CCc2sc3ncnc(OC4CCC(N5CC6(COC6)C5)CC4)c3c21 to produce OC[C@H]1CCc2sc3ncnc(OC4CCC(N5CC6(COC6)C5)CC4)c3c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.