(S)-3,4,8,8a-tetrahydro-8a-(hydroxymethyl)-1,6-(2H,7H)-naphthalenedione-1-ethylene acetal

(4aS,6S,8aS)-8a-(((2-(trimethylsilyl)ethoxy)methoxy)methyl)octahydro-2H-spiro[naphthalene-1,2'-[1,3]dioxolan]-6-ol