Dolineone

6,6aα-Dihydro-1,3-dioxolo[6,7][1]benzopyrano[3,4-b]furo[3,2-g][1]benzopyran-13(13aαH)-one

(6aS,13aS)-6a,13a-Dihydro-1,3-dioxolo[6,7][1]benzopyrano[3,4-b]furo[3,2-g][1]benzopyran-13(6H)-one