ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C18H24N2/c1-3-7-20-11-13-9-16-15(8-12(2)10-19-16)14-5-4-6-17(20)18(13)14/h4-6,11-12,15-16,19H,3,7-10H2,1-2H3/t12-,15?,16-/m1/s1/file?format=sdf&get3d=True -- InChI=1S/C18H24N2/c1-3-7-20-11-13-9-16-15(8-12(2)10-19-16)14-5-4-6-17(20)18(13)14/h4-6,11-12,15-16,19H,3,7-10H2,1-2H3/t12-,15?,16-/m1/s1 could not be loaded.