ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C16H16N2O/c19-16-9-5-4-8-15(16)13-18-11-10-17-12-14-6-2-1-3-7-14/h1-9,12-13,18H,10-11H2/b15-13?,17-12+/file?format=sdf&get3d=True  -- InChI=1S/C16H16N2O/c19-16-9-5-4-8-15(16)13-18-11-10-17-12-14-6-2-1-3-7-14/h1-9,12-13,18H,10-11H2/b15-13?,17-12+ could not be loaded.