ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C18H22N2O/c1-4-12-13-9-10-20(3,21)18(12)16-14-7-5-6-8-15(14)19-17(16)11(13)2/h5-8,12-13,18-19H,2,4,9-10H2,1,3H3/t12?,13-,18+,20+/m1/s1/file?format=sdf&get3d=True  -- InChI=1S/C18H22N2O/c1-4-12-13-9-10-20(3,21)18(12)16-14-7-5-6-8-15(14)19-17(16)11(13)2/h5-8,12-13,18-19H,2,4,9-10H2,1,3H3/t12?,13-,18+,20+/m1/s1 could not be loaded.