ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C18H34/c1-17(2,15-11-7-5-8-12-15)18(3,4)16-13-9-6-10-14-16/h15-16H,5-14H2,1-4H3/file?format=sdf&get3d=True  -- InChI=1S/C18H34/c1-17(2,15-11-7-5-8-12-15)18(3,4)16-13-9-6-10-14-16/h15-16H,5-14H2,1-4H3 could not be loaded.