ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H24N2O2/c1-3-12-13-8-10-22-11-9-20(18(12)22)14-6-4-5-7-15(14)21-17(20)16(13)19(23)24-2/h4-7,12-13,18,21H,3,8-11H2,1-2H3/t12-,13?,18+,20+/m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C20H24N2O2/c1-3-12-13-8-10-22-11-9-20(18(12)22)14-6-4-5-7-15(14)21-17(20)16(13)19(23)24-2/h4-7,12-13,18,21H,3,8-11H2,1-2H3/t12-,13?,18+,20+/m0/s1 could not be loaded.