ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H28O/c1-3-20(21)13-11-18-17-9-8-14-6-4-5-7-15(14)16(17)10-12-19(18,20)2/h1,6,15-18,21H,4-5,7-13H2,2H3/t15-,16 ,17 ,18-,19-,20-/m0/s1/file?format=sdf&get3d=True -- InChI=1S/C20H28O/c1-3-20(21)13-11-18-17-9-8-14-6-4-5-7-15(14)16(17)10-12-19(18,20)2/h1,6,15-18,21H,4-5,7-13H2,2H3/t15-,16 ,17 ,18-,19-,20-/m0/s1 could not be loaded.