ERROR opening https://cactus.nci.nih.gov/chemical/structure/s1c%28%5BC%40%40H%5D%28Oc2cccc3c2cccc3%29CCNC%29ccc1/file?format=sdf&get3d=True  -- s1c%28%5BC%40%40H%5D%28Oc2cccc3c2cccc3%29CCNC%29ccc1 could not be loaded.