Using O=C(OCc1ccccc1)c1c(CCCOC2=CCCCO2)ccc2ccccc12 to produce O=C(OCc1ccccc1)c1c(CCCO)ccc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.