Using CCOC(=O)c1cc2c(Cl)ncnc2[nH]1, C[Si](C)(C)CCOCCl to produce CCOC(=O)c1cc2c(Cl)ncnc2n1COCC[Si](C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.