ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C21H31NO2/c1-6-7-10-13-22-15-17(16-11-8-9-12-18(16)22)19(23)14-20(2,3)21(4,5)24/h8-9,11-12,15,24H,6-7,10,13-14H2,1-5H3/file?format=sdf&get3d=True  -- InChI=1S/C21H31NO2/c1-6-7-10-13-22-15-17(16-11-8-9-12-18(16)22)19(23)14-20(2,3)21(4,5)24/h8-9,11-12,15,24H,6-7,10,13-14H2,1-5H3 could not be loaded.