. . "C" . . "Betaenone C" . . . "Betaenone C" . "(2S,3R,4R,4aS,5R,7R,8aS)-3-[(2R)-butan-2-yl]-2,7-dihydroxy-4-[(2Z)-3-hydroxyprop-2-enoyl]-2,4,5,7-tetramethyloctahydronaphthalen-1(2H)-one" . . . . . . . . . . . . .