ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%5BN%40%40%5D1CCN2%5BC%40H%5D%28C1%29c1c%28Cc3c2nccc3%29cccc1/file?format=sdf&get3d=True -- C%5BN%40%40%5D1CCN2%5BC%40H%5D%28C1%29c1c%28Cc3c2nccc3%29cccc1 could not be loaded.