ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C16H34O2/c17-15-13-11-9-7-5-3-1-2-4-6-8-10-12-14-16-18/h17-18H%2C1-16H2/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C16H34O2/c17-15-13-11-9-7-5-3-1-2-4-6-8-10-12-14-16-18/h17-18H%2C1-16H2 could not be loaded.