(4S)-4-hydroxy-2-oxoheptanedioate => (4Z)-2-oxohept-4-enedioate + H2O
(4s)-4-hydroxy-2-oxoheptanedioate => (4z)-2-oxohept-4-enedioate + h2o
(4S)-4-hydroxy-2-oxoheptanedioate => (4Z)-2-oxohept-4-enedioate + H2O
(4s)-4-hydroxy-2-oxoheptanedioate => (4z)-2-oxohept-4-enedioate + h2o