ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C19H20N4O/c1-23-10-11(5-12(8-20)19(21)24)6-15-14-3-2-4-16-18(14)13(9-22-16)7-17(15)23/h2-4,6,9,11-12,17,22H,5,7,10H2,1H3,(H2,21,24)/t11-,12?,17-/m1/s1/file?format=sdf&get3d=True  -- InChI=1S/C19H20N4O/c1-23-10-11(5-12(8-20)19(21)24)6-15-14-3-2-4-16-18(14)13(9-22-16)7-17(15)23/h2-4,6,9,11-12,17,22H,5,7,10H2,1H3,(H2,21,24)/t11-,12?,17-/m1/s1 could not be loaded.