. . . . . . . . . "(5S)-3-Acetyl-5-[(2S)-butan-2-yl]-4-hydroxy-1,5-dihydro-2H-pyrrol-2-one" . . . . . . . "Tenuazonic acid" . . . . . . . "tenuazonic acid synthetase" . . "Tenuazonic acid" . . . "tenuazonic acid" . . .