ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C16H10N2O2/c19-15-9-5-1-3-7-11%289%2917-13%2815%2914-16%2820%2910-6-2-4-8-12%2810%2918-14/h1-8%2C17-18H/b14-13%2B/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/C16H10N2O2/c19-15-9-5-1-3-7-11%289%2917-13%2815%2914-16%2820%2910-6-2-4-8-12%2810%2918-14/h1-8%2C17-18H/b14-13%2B could not be loaded.