ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C4H7NO4S/c5-1(3(6)7)2(10)4(8)9/h1-2,10H,5H2,(H,6,7)(H,8,9)/t1-,2?/m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C4H7NO4S/c5-1(3(6)7)2(10)4(8)9/h1-2,10H,5H2,(H,6,7)(H,8,9)/t1-,2?/m0/s1 could not be loaded.