Using COc1cc(-c2ccc(C)nc2C)cc2ccc(=O)[nH]c12 to produce Cc1ccc(-c2cc(O)c3[nH]c(=O)ccc3c2)c(C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.