2,4-pentadienoic acid, 5-[(3R,4S,4aS,9aR)-4a-(acetyloxy)-3,4,4a,5,8,9-hexahydro-3,7-dimethyl-1,8-dioxo-1H-4,9a-ethanocyclohepta[c]pyran-3-yl]-2-methyl-, (2E,4E)- 5-(7-Acetoxy-4,9-dimethyl-3,11-dioxo-10-oxa-tricyclo[6.3.2.01,7]tridec-4-en-9-yl)-2-methyl-penta-2,4-dienoic acid InChI=1/C22H26O7/c1-13-7-11-22(28-15(3)23)17-8-10-21(22,12-16(13)24)19(27)29-20(17,4)9-5-6-14(2)18(25)26/h5-7,9,17H,8,10-12H2,1-4H3,(H,25,26)/b9-5+,14-6+/t17-,20+,21-,22-/m0/s Pseudolaric acid F rel-(2E,4E)-5-[(3R,4S,4aS,9aR)-4a-(acetyloxy)-3,7-dimethyl-1,8-dioxo-3,4,4a,5,8,9-hexahydro-4,9a-ethanocyclohepta[c]pyran-3-yl]-2-methylpenta-2,4-dienoic acid