ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%28CCc1ccc%28OC%5BC%40%40H%5D%28O%29CNC%28C%29C%29cc1%29CC2CC2/file?format=sdf&get3d=True -- O%28CCc1ccc%28OC%5BC%40%40H%5D%28O%29CNC%28C%29C%29cc1%29CC2CC2 could not be loaded.