ERROR opening https://cactus.nci.nih.gov/chemical/structure/%5BH%5D%5BC%40%40%5D12CCCN1C%28%3DO%29%5BC%40H%5D%28Cc1c%5BnH%5Dc3ccccc13%29NC2%3DO/file?format=sdf&get3d=True -- %5BH%5D%5BC%40%40%5D12CCCN1C%28%3DO%29%5BC%40H%5D%28Cc1c%5BnH%5Dc3ccccc13%29NC2%3DO could not be loaded.