ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C11H16N4O5/c1-11(2)19-6-5(3-16)18-10(7(6)20-11)15-4-13-9(14-15)8(12)17/h4-7,10,16H,3H2,1-2H3,(H2,12,17)/t5-,6+,7?,10-/m1/s1/file?format=sdf&get3d=True  -- InChI=1S/C11H16N4O5/c1-11(2)19-6-5(3-16)18-10(7(6)20-11)15-4-13-9(14-15)8(12)17/h4-7,10,16H,3H2,1-2H3,(H2,12,17)/t5-,6+,7?,10-/m1/s1 could not be loaded.