ERROR opening https://cactus.nci.nih.gov/chemical/structure/c3ccccc3-n1nc%28-c4ccccc4%29cc1%5BNH3%5DC%28%3DO%29c%28c2%29cccc2C%23N/file?format=sdf&get3d=True -- c3ccccc3-n1nc%28-c4ccccc4%29cc1%5BNH3%5DC%28%3DO%29c%28c2%29cccc2C%23N could not be loaded.