(3a'R,4S,7'S,7a'S)-2,2,2',2'-四甲基四氢螺[[1,3]二氧戊环-4,6'-[1,3]二氧戊环并[4,5-c]吡喃]-7'-醇

(3a'R,4S,7'S,7a'S)-2,2,2',2'-四甲基四氢螺[[1,3]二氧戊环-4,6'-[1,3]二氧戊环并[4,5-c]吡喃]-7'-醇

(3a'R,4S,7'S,7a'S)-2,2,2',2'-Tetramethyltetrahydrospiro[[1,3]dioxolane-4,6'-[1,3]dioxolo[4,5-c]pyran]-7'-ol