ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C7H8N4O2/c1-10-5-4%288-3-9-5%296%2812%2911%282%297%2810%2913/h3H%2C1-2H3%2C%28H%2C8%2C9%29/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/C7H8N4O2/c1-10-5-4%288-3-9-5%296%2812%2911%282%297%2810%2913/h3H%2C1-2H3%2C%28H%2C8%2C9%29 could not be loaded.