(4R)-4-hydroxy-2-oxoglutarate => glyoxylate + pyruvate
(4r)-4-hydroxy-2-oxoglutarate => glyoxylate + pyruvate
(4R)-4-hydroxy-2-oxoglutarate => glyoxylate + pyruvate
(4r)-4-hydroxy-2-oxoglutarate => glyoxylate + pyruvate