ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C18H30O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h6-11H,2-5,12-17H2,1H3,(H,19,20)/b7-6-,9-8 ,11-10 /file?format=sdf&get3d=True  -- InChI=1S/C18H30O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h6-11H,2-5,12-17H2,1H3,(H,19,20)/b7-6-,9-8 ,11-10  could not be loaded.