Using CN(C)C=O, CC(C)(C)[Si](C)(C)OCc1cn(COCC[Si](C)(C)C)cn1 to produce CC(C)(C)[Si](C)(C)OCc1cn(COCC[Si](C)(C)C)c(C=O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.