ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C10H12N8O3/c11-10-14-8-7(9(20)15-10)13-3-18(8)6-1-4(16-17-12)5(2-19)21-6/h3-6,19H,1-2H2,(H3,11,14,15,20)/t4?,5-,6-/m1/s1/file?format=sdf&get3d=True  -- InChI=1S/C10H12N8O3/c11-10-14-8-7(9(20)15-10)13-3-18(8)6-1-4(16-17-12)5(2-19)21-6/h3-6,19H,1-2H2,(H3,11,14,15,20)/t4?,5-,6-/m1/s1 could not be loaded.