339525-94-9 (4r,4ar,7ar,12bs)-5,9-dihydroxy-3-methyl-1,2,4,4a,5,6,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinoline-7-one 3271-65-6 (4s,4'as)-2,2,2',2'-tetramethylspiro[1,3-dioxolane-4,6'-4,4a,7,7a -tetrahydrofuro[3,2-d][1,3]dioxine]-7'-ol 72657-29-5 6,7,8-trimethoxy-3a,4,14,14a-tetrahydrobenzo[3,4]furo[3',4':6,7]cycloocta[1,2-f][1,3]benzodioxol-3(1H)-one