Using C1CCOC1, CC(=O)c1cn(COCc2ccccc2)c2cn[nH]c(=O)c12 to produce CC(C)(O)c1cn(COCc2ccccc2)c2cn[nH]c(=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.