ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C8H7NO3/c1-6%2810%297-3-2-4-8%285-7%299%2811%2912/h2-5H%2C1H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C8H7NO3/c1-6%2810%297-3-2-4-8%285-7%299%2811%2912/h2-5H%2C1H3 could not be loaded.