ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H40O/c1-4-6-7-8-9-10-11-12-16-19-20(21-19)17-14-13-15-18(3)5-2/h18-20H,4-17H2,1-3H3/t18?,19-,20+/m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C20H40O/c1-4-6-7-8-9-10-11-12-16-19-20(21-19)17-14-13-15-18(3)5-2/h18-20H,4-17H2,1-3H3/t18?,19-,20+/m0/s1 could not be loaded.