ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C21H44O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22/h22H,2-21H2,1H3/file?format=sdf&get3d=True  -- InChI=1S/C21H44O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22/h22H,2-21H2,1H3 could not be loaded.