ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C18H16N2O7S2.2Na/c1-10-7-11(2)17(28(22,23)24)9-14(10)19-20-15-8-16(21)12-5-3-4-6-13(12)18(15)29(25,26)27;;/h3-9,21H,1-2H3,(H,22,23,24)(H,25,26,27);;/q;2* 1/p-2/b20-19 ;;/file?format=sdf&get3d=True  -- InChI=1S/C18H16N2O7S2.2Na/c1-10-7-11(2)17(28(22,23)24)9-14(10)19-20-15-8-16(21)12-5-3-4-6-13(12)18(15)29(25,26)27;;/h3-9,21H,1-2H3,(H,22,23,24)(H,25,26,27);;/q;2* 1/p-2/b20-19 ;; could not be loaded.