ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C20H19NO3/c1-16%2823-20-9-5-6-14-21-20%2915-22-17-10-12-19%2813-11-17%2924-18-7-3-2-4-8-18/h2-14%2C16H%2C15H2%2C1H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C20H19NO3/c1-16%2823-20-9-5-6-14-21-20%2915-22-17-10-12-19%2813-11-17%2924-18-7-3-2-4-8-18/h2-14%2C16H%2C15H2%2C1H3 could not be loaded.