ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C16H24N2O/c1-3-8-18(9-4-2)10-7-13-12-17-16-6-5-14(19)11-15(13)16/h5-6,11-12,17,19H,3-4,7-10H2,1-2H3/file?format=sdf&get3d=True  -- InChI=1S/C16H24N2O/c1-3-8-18(9-4-2)10-7-13-12-17-16-6-5-14(19)11-15(13)16/h5-6,11-12,17,19H,3-4,7-10H2,1-2H3 could not be loaded.