(1R,4R,5S,6S,7R)-1-isovaleryloxyaristol-9-en-8-one (1beta)-8-oxoaristol-9-en-1-yl 3-methylbutanoate 3-Methyl-butyric acid 1,1,7,7a-tetramethyl-2-oxo-1a,2,4,5,6,7,7a,7b-octahydro-1H-cyclopropa[a]naphthalen-4-yl ester InChI=1/C20H30O3/c1-11(2)9-16(22)23-15-8-7-12(3)20(6)13(15)10-14(21)17-18(20)19(17,4)5/h10-12,15,17-18H,7-9H2,1-6H3/t12-,15-,17-,18+,20+/m1/s Kanshone F butanoic acid, 3-methyl-, (1aR,4R,7R,7aR,7bS)-1a,2,4,5,6,7,7a,7b-octahydro-1,1,7,7a-tetramethyl-2-oxo-1H-cyclopropa[a]naphthalen-4-yl ester