Using COC(=O)c1cccc2c1Cc1c-2[nH]c(=O)c2ccccc12 to produce O=c1[nH]c2c(c3ccccc13)Cc1c(CO)cccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.