28296-70-0 1,2,3,4,4a,5,6,6a,7,11,11a,11b-Dodecahydro-4,4,7,11b-tetramethylphenanthro[3,2-b]furan-3,4a,6-triol 62123-25-5 Spiro[furan-2(3H),7'(4'H)-[1H,3H-3a,8b]methanobenzo[1,2-b:3,4-c']difuran]-1'-one,4-(2,5-dihydro-2-methyl-5-oxo-2-furanyl)-3'-(3-furanyl)hexahydro-8'a-hydroxy-5,5-dimethyl-,[3'S-[3'a,3'ab,5'ab,7'b[R*(R*)],8'ab,8'bb]]-