ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C16H12O4/c1-19-12-5-2-10%283-6-12%2914-9-20-15-8-11%2817%294-7-13%2815%2916%2814%2918/h2-9%2C17H%2C1H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C16H12O4/c1-19-12-5-2-10%283-6-12%2914-9-20-15-8-11%2817%294-7-13%2815%2916%2814%2918/h2-9%2C17H%2C1H3 could not be loaded.