ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C12H16N2/c1-14%282%298-7-10-9-13-12-6-4-3-5-11%2810%2912/h3-6%2C9%2C13H%2C7-8H2%2C1-2H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C12H16N2/c1-14%282%298-7-10-9-13-12-6-4-3-5-11%2810%2912/h3-6%2C9%2C13H%2C7-8H2%2C1-2H3 could not be loaded.