ERROR opening https://cactus.nci.nih.gov/chemical/structure/c3ccccc3CC%28c2ccccc2%29N%28CC1%29CCN1C4CCCCC4/file?format=sdf&get3d=True  -- c3ccccc3CC%28c2ccccc2%29N%28CC1%29CCN1C4CCCCC4 could not be loaded.