Using c1ccc(C2CCc3cc(OC4CCC5(CC4)OCCO5)ccc3O2)cc1 to produce O=C1CCC(Oc2ccc3c(c2)CCC(c2ccccc2)O3)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.