ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C16H26O2/c1-13(2)7-5-8-14(3)9-6-10-15(4)11-12-16(17)18/h7,9,11H,5-6,8,10,12H2,1-4H3,(H,17,18)/file?format=sdf&get3d=True  -- InChI=1S/C16H26O2/c1-13(2)7-5-8-14(3)9-6-10-15(4)11-12-16(17)18/h7,9,11H,5-6,8,10,12H2,1-4H3,(H,17,18) could not be loaded.