Using COc1nnc(-c2cc(C)c(O)c(C)c2)cc1-c1[nH]c2ccccc2c1C to produce Cc1cc(-c2cc(-c3[nH]c4ccccc4c3C)c(=O)[nH]n2)cc(C)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.