ERROR opening https://cactus.nci.nih.gov/chemical/structure/c12c%28c%5BnH%5Dc1cccc2%29CCN1CCC%28NC%28c2ccccc2%29%3DO%29CC1/file?format=sdf&get3d=True -- c12c%28c%5BnH%5Dc1cccc2%29CCN1CCC%28NC%28c2ccccc2%29%3DO%29CC1 could not be loaded.