ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C8H8O4/c1-4%289%293-6-7%2810%295%282%298%2811%2912-6/h3%2C10H%2C1-2H3/b6-3%20/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C8H8O4/c1-4%289%293-6-7%2810%295%282%298%2811%2912-6/h3%2C10H%2C1-2H3/b6-3%20 could not be loaded.