ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C14H13ClN4O2/c1-2-7-18-13(20)11-12(17-8-16-11)19(14(18)21)10-5-3-9(15)4-6-10/h3-6,8H,2,7H2,1H3,(H,16,17)/file?format=sdf&get3d=True  -- InChI=1S/C14H13ClN4O2/c1-2-7-18-13(20)11-12(17-8-16-11)19(14(18)21)10-5-3-9(15)4-6-10/h3-6,8H,2,7H2,1H3,(H,16,17) could not be loaded.