ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%3D3c1ccccc1Oc2ccccc2C%3D3CN%28C%29CC%23C/file?format=sdf&get3d=True  -- C%3D3c1ccccc1Oc2ccccc2C%3D3CN%28C%29CC%23C could not be loaded.