ERROR opening https://cactus.nci.nih.gov/chemical/structure/N%23Cc2ccccc2-c%28ccc3%29cc3-n1cnc%28c4%29c1ccc4C%28C%29%28C%29O/file?format=sdf&get3d=True  -- N%23Cc2ccccc2-c%28ccc3%29cc3-n1cnc%28c4%29c1ccc4C%28C%29%28C%29O could not be loaded.