Using CCOC(=O)c1cn(COCC[Si](C)(C)C)c2ncnc(-c3ccc4cn(C)nc4c3)c12 to produce Cn1cc2ccc(-c3ncnc4c3c(C(=O)O)cn4COCC[Si](C)(C)C)cc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.