Using CI, Cc1nc(C2(O)COC2)n(COCC[Si](C)(C)C)c1I to produce COC1(c2nc(C)c(I)n2COCC[Si](C)(C)C)COC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.