ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C18H38O/c1-18(2)16-14-12-10-8-6-4-3-5-7-9-11-13-15-17-19/h18-19H,3-17H2,1-2H3/file?format=sdf&get3d=True -- InChI=1S/C18H38O/c1-18(2)16-14-12-10-8-6-4-3-5-7-9-11-13-15-17-19/h18-19H,3-17H2,1-2H3 could not be loaded.