Using CCCc1c(OCCCOc2ccc(OC(=O)CC)c(C)c2C)ccc2c(CC)noc12, [OH-] to produce CCCc1c(OCCCOc2ccc(C(C)C(=O)O)c(C)c2)ccc2c(CC)noc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.