ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C7H5N5O8/c1-8%2812%2819%2920%297-5%2810%2815%2916%292-4%289%2813%2914%293-6%287%2911%2817%2918/h2-3H%2C1H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C7H5N5O8/c1-8%2812%2819%2920%297-5%2810%2815%2916%292-4%289%2813%2914%293-6%287%2911%2817%2918/h2-3H%2C1H3 could not be loaded.