ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C18H25NO2/c1-4-5-6-7-8-10-14-13-16(20)15-11-9-12-17(21-3)18(15)19(14)2/h9,11-13H,4-8,10H2,1-3H3/file?format=sdf&get3d=True  -- InChI=1S/C18H25NO2/c1-4-5-6-7-8-10-14-13-16(20)15-11-9-12-17(21-3)18(15)19(14)2/h9,11-13H,4-8,10H2,1-3H3 could not be loaded.