3,15-Dihydroxy-ent-labd-7-en-17-oic acid 5,10-cycloretinol, 5,6,7,10,11,12,13,14-octahydro-2,19-dihydroxy-19-oxo-, (2R,5R,10S)- 6-Hydroxy-1-(5-hydroxy-3-methyl-pentyl)-5,5,8a-trimethyl-1,4,4a,5,6,7,8,8a-octahydro-naphthalene-2-carboxylic acid InChI=1/C20H34O4/c1-13(10-12-21)5-7-15-14(18(23)24)6-8-16-19(2,3)17(22)9-11-20(15,16)4/h6,13,15-17,21-22H,5,7-12H2,1-4H3,(H,23,24)/t13?,15-,16?,17-,20+/m1/s rel-(2R,5R,10S)-2,19-dihydroxy-19-oxo-5,6,7,10,11,12,13,14-octahydro-5,10-cycloretinol