ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C12H18N2O2/c1-11%282%294-10%2814-9-16%295-12%283%2C6-11%297-13-8-15/h10H%2C4-7H2%2C1-3H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C12H18N2O2/c1-11%282%294-10%2814-9-16%295-12%283%2C6-11%297-13-8-15/h10H%2C4-7H2%2C1-3H3 could not be loaded.