(2E)-butenoyl-[ACP] + H2O => (3R)-hydroxybutanoyl-[ACP]
(2e)-butenoyl-[acp] + h2o => (3r)-hydroxybutanoyl-[acp]
(2E)-butenoyl-[ACP] + H2O => (3R)-hydroxybutanoyl-[ACP]
(2e)-butenoyl-[acp] + h2o => (3r)-hydroxybutanoyl-[acp]