ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C20H17ClFN3O4/c1-3-29-19(27)17-18(26)25(20(28)23-2)15-9-8-11(21)10-13(15)16(24-17)12-6-4-5-7-14(12)22/h4-10,17H,3H2,1-2H3,(H,23,28)/file?format=sdf&get3d=True -- InChI=1S/C20H17ClFN3O4/c1-3-29-19(27)17-18(26)25(20(28)23-2)15-9-8-11(21)10-13(15)16(24-17)12-6-4-5-7-14(12)22/h4-10,17H,3H2,1-2H3,(H,23,28) could not be loaded.