Using C=C(C)c1cn(COCC[Si](C)(C)C)c2ncc(NC(=O)NC3CCCCC3)nc12 to produce CC(C)c1cn(COCC[Si](C)(C)C)c2ncc(NC(=O)NC3CCCCC3)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.