ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H26N2O2/c1-2-19-9-5-10-21-11-8-15-14-6-3-4-7-16(14)22(17(15)18(19)21)20(24,12-19)13-23/h3-4,6-7,18,23-24H,2,5,8-13H2,1H3/t18-,19 ,20 /m1/s1/file?format=sdf&get3d=True -- InChI=1S/C20H26N2O2/c1-2-19-9-5-10-21-11-8-15-14-6-3-4-7-16(14)22(17(15)18(19)21)20(24,12-19)13-23/h3-4,6-7,18,23-24H,2,5,8-13H2,1H3/t18-,19 ,20 /m1/s1 could not be loaded.