ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29CCCN%28CCC%29c1n%28-c2ccccc2%29c3ccccc3c%28c1%29%3DCc4sc5ccccc5%5Bn%2B%5D4C/file?format=sdf&get3d=True -- CN%28C%29CCCN%28CCC%29c1n%28-c2ccccc2%29c3ccccc3c%28c1%29%3DCc4sc5ccccc5%5Bn%2B%5D4C could not be loaded.