Benzoicacid, 2,4-dihydroxy-6-methyl-,2,2a,4a,5,6,7,7a,7b-octahydro-6,6,7b-trimethyl-2a-[(1-oxohexadecyl)oxy]-1H-cyclobut[e]inden-2-ylester, [2R-(2a,2ab,4aa,7aa,7bb)]-