Using CCOC(C)n1cc(-c2ncnc3c2ccn3COC(=O)C(C)(C)C)cn1 to produce CC(C)(C)C(=O)OCn1ccc2c(-c3cn[nH]c3)ncnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.