(7'R,8'S,8S)-2'-Hydroxy-3,4:4',5'-bis-(methylenedioxy)-7-oxo-2,7'-cyclolignan 9-(6-Hydroxy-benzo[1,3]dioxol-5-yl)-7,8-dimethyl-8,9-dihydro-7H-naphtho[1,2-d][1,3]dioxol-6-one InChI=1/C20H18O6/c1-9-10(2)19(22)11-3-4-14-20(26-8-23-14)18(11)17(9)12-5-15-16(6-13(12)21)25-7-24-15/h3-6,9-10,17,21H,7-8H2,1-2H3/t9-,10-,17-/m0/s naphtho[1,2-d]-1,3-dioxol-6(7H)-one, 8,9-dihydro-9-(6-hydroxy-1,3-benzodioxol-5-yl)-7,8-dimethyl-, (7S,8R,9S)- rel-(7R,8S,9R)-9-(6-hydroxy-1,3-benzodioxol-5-yl)-7,8-dimethyl-8,9-dihydronaphtho[1,2-d][1,3]dioxol-6(7H)-one