ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H14/c1-3-9-17-15(7-1)13-14-16-8-2-4-10-18(16)20-12-6-5-11-19(17)20/h1-14H/b14-13?,15-13-,16-14-,19-17-,20-18-/file?format=sdf&get3d=True  -- InChI=1S/C20H14/c1-3-9-17-15(7-1)13-14-16-8-2-4-10-18(16)20-12-6-5-11-19(17)20/h1-14H/b14-13?,15-13-,16-14-,19-17-,20-18- could not be loaded.