ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C7H10N2O4/c8-5(7(11)12)1-3-9-4-2-6(10)13-9/h2,4-5H,1,3,8H2,(H,11,12)/file?format=sdf&get3d=True  -- InChI=1S/C7H10N2O4/c8-5(7(11)12)1-3-9-4-2-6(10)13-9/h2,4-5H,1,3,8H2,(H,11,12) could not be loaded.