ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%5BC%40H%5D%28c1ccccc1%29%5BC%40%40H%5D%28NC%29C/file?format=sdf&get3d=True  -- O%5BC%40H%5D%28c1ccccc1%29%5BC%40%40H%5D%28NC%29C could not be loaded.