Germacra-3,9,11(13)-triene-12,15-dioic acid, 5,6,8-trihydroxy-, 12,8-lactone, methyl ester, 5-acetate 2-chloro-3-hydroxy-2-methylbutyrate
Butyric acid, 2-chloro-3-hydroxy-2-methyl-, 6-ester with 5,6,8-trihydroxygermacra-3,9,11(13)-triene-12,15-dioic acid 12,8-lactone methyl ester acetate