Using Cn1cc(-c2cc3nccn3c(-c3cnn(COCC[Si](C)(C)C)c3)n2)cn1, ClCCl to produce Cn1cc(-c2cc3nccn3c(-c3cn[nH]c3)n2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.