ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C13H10N2O4/c16-10-6-5-9%2811%2817%2914-10%2915-12%2818%297-3-1-2-4-8%287%2913%2815%2919/h1-4%2C9H%2C5-6H2%2C%28H%2C14%2C16%2C17%29/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C13H10N2O4/c16-10-6-5-9%2811%2817%2914-10%2915-12%2818%297-3-1-2-4-8%287%2913%2815%2919/h1-4%2C9H%2C5-6H2%2C%28H%2C14%2C16%2C17%29 could not be loaded.