ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C11H14N4O4/c16-9-2-1-7(14-9)10(17)15-8(11(18)19)3-6-4-12-5-13-6/h4-8H,1-3H2,(H,14,16)(H,15,17)(H,18,19)/t6?,7-,8-/m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C11H14N4O4/c16-9-2-1-7(14-9)10(17)15-8(11(18)19)3-6-4-12-5-13-6/h4-8H,1-3H2,(H,14,16)(H,15,17)(H,18,19)/t6?,7-,8-/m0/s1 could not be loaded.