ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C16H17NO4/c18-11-3-8-1-2-17-6-9-4-12-13(21-7-20-12)5-10(9)14(15(8)17)16(11)19/h3-5,11,14-16,18-19H,1-2,6-7H2/t11-,14-,15 ,16 /m0/s1/file?format=sdf&get3d=True -- InChI=1S/C16H17NO4/c18-11-3-8-1-2-17-6-9-4-12-13(21-7-20-12)5-10(9)14(15(8)17)16(11)19/h3-5,11,14-16,18-19H,1-2,6-7H2/t11-,14-,15 ,16 /m0/s1 could not be loaded.