Using CC(C)(C)[Si](C)(C)OC(COc1c(Cl)nc(Cl)nc1N1CCOCC1)C1CC1 to produce OC(COc1c(Cl)nc(Cl)nc1N1CCOCC1)C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.