ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C16H22N2O/c1-18(13-5-2-3-6-13)10-9-12-11-17-14-7-4-8-15(19)16(12)14/h4,7-8,11,13,17,19H,2-3,5-6,9-10H2,1H3/file?format=sdf&get3d=True  -- InChI=1S/C16H22N2O/c1-18(13-5-2-3-6-13)10-9-12-11-17-14-7-4-8-15(19)16(12)14/h4,7-8,11,13,17,19H,2-3,5-6,9-10H2,1H3 could not be loaded.