ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C20H24O4/c1-9%282%2911-7-13%2821%2919%285%2917%2815%2811%2923%2920%286%2914%2822%298-12%2810%283%294%2916%2824%2918%2819%2920/h7-10%2C17-18H%2C1-6H3/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/C20H24O4/c1-9%282%2911-7-13%2821%2919%285%2917%2815%2811%2923%2920%286%2914%2822%298-12%2810%283%294%2916%2824%2918%2819%2920/h7-10%2C17-18H%2C1-6H3 could not be loaded.