ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C16H19NO4/c1-17-11-7-8-12%2817%2914%2815%2818%2919%2913%289-11%2921-16%2820%2910-5-3-2-4-6-10/h2-6%2C11-14H%2C7-9H2%2C1H3%2C%28H%2C18%2C19%29/t11-%2C12%2B%2C13-%2C14%2B/m0/s1/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C16H19NO4/c1-17-11-7-8-12%2817%2914%2815%2818%2919%2913%289-11%2921-16%2820%2910-5-3-2-4-6-10/h2-6%2C11-14H%2C7-9H2%2C1H3%2C%28H%2C18%2C19%29/t11-%2C12%2B%2C13-%2C14%2B/m0/s1 could not be loaded.