ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%5BC%40%40H%5D1%5BC%40H%5D2OC%5BC%40%40H%5D%28O%29%5BC%40H%5D2OC1/file?format=sdf&get3d=True -- O%5BC%40%40H%5D1%5BC%40H%5D2OC%5BC%40%40H%5D%28O%29%5BC%40H%5D2OC1 could not be loaded.