ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C20H25NO4/c1-11%2822%2924-16-7-5-13-14-10-12-4-6-15%2823-3%2918-17%2812%2920%2813%2C19%2816%2925-18%298-9-21%2814%292/h4%2C6%2C13-14%2C16%2C19H%2C5%2C7-10H2%2C1-3H3/t13-%2C14%20%2C16-%2C19-%2C20-/m0/s1/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C20H25NO4/c1-11%2822%2924-16-7-5-13-14-10-12-4-6-15%2823-3%2918-17%2812%2920%2813%2C19%2816%2925-18%298-9-21%2814%292/h4%2C6%2C13-14%2C16%2C19H%2C5%2C7-10H2%2C1-3H3/t13-%2C14%20%2C16-%2C19-%2C20-/m0/s1 could not be loaded.