5,10-cycloretinoic acid, 10,13-epoxy-5,6,7,8,9,10,11,12,13,14-decahydro-, (5S,9S,10R,13S)- Dihydrogrindelic acid InChI=1/C20H34O3/c1-14-7-8-15-17(2,3)9-6-10-19(15,5)20(14)12-11-18(4,23-20)13-16(21)22/h14-15H,6-13H2,1-5H3,(H,21,22)/t14-,15?,18-,19-,20+/m0/s rel-(5R,9R,10S,13R)-5,6,7,8,9,10,11,12,13,14-decahydro-10,13-epoxy-5,10-cycloretinoic acid