KAURAN-18-OIC ACID, 13,13'-((1,10-DIOXO-1,10-DECANEDIYL)BIS(OXY))BIS-, 18,18'-ANHYDRIDE, (4.ALPHA.)-(4'.ALPHA.)-
kauran-18-oic acid, 13,13'-((1,10-dioxo-1,10-decanediyl)bis(oxy))bis-, 18,18'-anhydride, (4.alpha.)-(4'.alpha.)-