四甲基四氢螺[[1,3]二氧戊环-4,6'-[1,3]二氧杂环[4,5-c]吡喃]-7'-醇

Tetramethyltetrahydrospiro[[1,3]dioxolane-4,6'-[1,3]dioxolo[4,5-c]pyran]-7'-ol