14-Deoxy-15-isopropylidene-11,12-didehydroandrographolide 2(5H)-furanone, 3-[(E)-2-[(1R,4aS,5R,6R,8aR)-decahydro-6-hydroxy-5-(hydroxymethyl)-5,8a-dimethyl-2-methylene-1-naphthalenyl]ethenyl]-5-(1-methylethylidene)- 3-[2-(6-Hydroxy-5-hydroxymethyl-5,8a-dimethyl-2-methylene-decahydro-naphthalen-1-yl)-vinyl]-5-isopropylidene-5H-furan-2-one InChI=1/C23H32O4/c1-14(2)18-12-16(21(26)27-18)7-8-17-15(3)6-9-19-22(17,4)11-10-20(25)23(19,5)13-24/h7-8,12,17,19-20,24-25H,3,6,9-11,13H2,1-2,4-5H3/b8-7+/t17-,19+,20-,22+,23+/m1/s rel-(2R,5R,6S,10R)-2,17-dihydroxy-15-(1-methylethylidene)-20-oxo-9,19-didehydro-5,6,7,8,9,10,15-octahydro-20:5,10-dicycloretinal