ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1/C5H6N2O2/c1-3-2-6-5(9)7-4(3)8/h2H,1H3,(H2,6,7,8,9)/f/h6-7H (1,3H-Thymine)/file?format=sdf&get3d=True  -- InChI=1/C5H6N2O2/c1-3-2-6-5(9)7-4(3)8/h2H,1H3,(H2,6,7,8,9)/f/h6-7H (1,3H-Thymine) could not be loaded.