ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN1CCN%28CC1%29C2%3DNc3cc%28ccc3Nc4c2cccc4%29Cl/file?format=sdf&get3d=True  -- CN1CCN%28CC1%29C2%3DNc3cc%28ccc3Nc4c2cccc4%29Cl could not be loaded.