Using COC(=O)COc1c(CC=C(C)C)c(OC)cc(OC)c1C(=O)CCc1ccc(OC)cc1, [OH-] to produce COc1ccc(CC(=O)Cc2c(OC)cc(OC)c(CC=C(C)C)c2OCC(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.