The molecule is a stilbenoid isolated from the stems of Kobresia nepalensis and has been shown to exhibit inhibitory activity against topoisomerase II. It has a role as a metabolite and an EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor. It is an organic heterotetracyclic compound, a cyclic ether, a polyphenol and a stilbenoid.
(1S,8R,9S,16S)-8,16-bis(4-hydroxyphenyl)-9-[(1S,8R,9S,16S)-4,6,12-trihydroxy-8,16-bis(4-hydroxyphenyl)-15-oxatetracyclo[8.6.1.02,7.014,17]heptadeca-2(7),3,5,10(17),11,13-hexaen-9-yl]-15-oxatetracyclo[8.6.1.02,7.014,17]heptadeca-2(7),3,5,10(17),11,13-hexaene-4,6,12-triol