ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%26%2361%3B1S/C20H12/c1-2-7-17-15%284-1%2912-16-9-8-13-5-3-6-14-10-11-18%2817%2920%2816%2919%2813%2914/h1-12H/file?format=sdf&get3d=True -- InChI%3DInChI%26%2361%3B1S/C20H12/c1-2-7-17-15%284-1%2912-16-9-8-13-5-3-6-14-10-11-18%2817%2920%2816%2919%2813%2914/h1-12H could not be loaded.