Using CCCOc1c(C(=O)OCC)c(C(=O)OCC)c(OCCC)c2ccccc12 to produce CCCOc1c(C(=O)O)c(C(=O)O)c(OCCC)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.