Tetraneurin E

Ambrosanolide

(3aS,9bβ)-Dodecahydro-9α-acetoxy-6aβ-hydroxy-6α-hydroxymethyl-9aα-methyl-3-methyleneazuleno[4,5-b]furan-2-one

(3aS)-9α-Acetoxy-3aβ,4,5,6,6a,7,8,9,9a,9bβ-decahydro-6α-hydroxymethyl-6aβ-hydroxy-9aα-methyl-3-methyleneazuleno[4,5-b]furan-2(3H)-one