1,6-bis[(1S,4R,5R,8R,12R,13S)-1,5-dimethyl-10-(trifluorometh yl)-11,14,15,16-tetraoxatetracyclo[10.3.1.04,13.08,13]hexade c-9-en-9-yl]-3-hexene-1,6-diol NSC725191