Using COc1cc2c3c([nH]c2cc1C(C)=O)C(C)N(C(C)=O)CC3 to produce CCc1cc2[nH]c3c(c2cc1OC)CCN(C(C)=O)C3C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.