Using COc1ccc2c(c1)Oc1cc(OC)ccc1C2(C)C, O=CN1CCCCC1 to produce COc1ccc2c(c1)Oc1c(ccc(OC)c1C=O)C2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.