ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%5BC%40%40H%5D%28CN2CCN%28c1ccccc1%29CC2%29CO/file?format=sdf&get3d=True  -- O%5BC%40%40H%5D%28CN2CCN%28c1ccccc1%29CC2%29CO could not be loaded.