ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C11H16N4O4/c16-3-8-6%2817%291-9%2819-8%2915-5-14-10-7%2818%292-12-4-13-11%2810%2915/h4-9%2C16-18H%2C1-3H2%2C%28H%2C12%2C13%29/t6-%2C7%20%2C8%20%2C9%20/m0/s1/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/C11H16N4O4/c16-3-8-6%2817%291-9%2819-8%2915-5-14-10-7%2818%292-12-4-13-11%2810%2915/h4-9%2C16-18H%2C1-3H2%2C%28H%2C12%2C13%29/t6-%2C7%20%2C8%20%2C9%20/m0/s1 could not be loaded.