ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C12H18AsN5O4/c1-13(2,21)3-6-8(19)9(20)12(22-6)18-5-17-7-10(14)15-4-16-11(7)18/h4-6,8-9,12,19-20H,3H2,1-2H3,(H2,14,15,16)/file?format=sdf&get3d=True  -- InChI=1S/C12H18AsN5O4/c1-13(2,21)3-6-8(19)9(20)12(22-6)18-5-17-7-10(14)15-4-16-11(7)18/h4-6,8-9,12,19-20H,3H2,1-2H3,(H2,14,15,16) could not be loaded.