echinenone + H2O => 4,4-dihydroxy-all-trans-beta-carotene
echinenone + h2o => 4,4-dihydroxy-all-trans-beta-carotene
echinenone + H2O => 4,4-dihydroxy-all-trans-beta-carotene
echinenone + h2o => 4,4-dihydroxy-all-trans-beta-carotene