ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C12H18N2O/c15-10-4-1-2-5-12(10)6-3-8-14-9-7-13-11(12)14/h7,9-10,15H,1-6,8H2/file?format=sdf&get3d=True -- InChI=1S/C12H18N2O/c15-10-4-1-2-5-12(10)6-3-8-14-9-7-13-11(12)14/h7,9-10,15H,1-6,8H2 could not be loaded.