ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1/C15H20O4/c1-10(7-
13(17)18)5-6-15(19)
11(2)8-12(16)9-14
(15,3)4/h5-8,19H,9H2,
1-4H3,(H,17,18)/b6-
5+,10-7-/t15-/m0/s1/
f/h17H/file?format=sdf&get3d=True -- InChI=1/C15H20O4/c1-10(7-
13(17)18)5-6-15(19)
11(2)8-12(16)9-14
(15,3)4/h5-8,19H,9H2,
1-4H3,(H,17,18)/b6-
5+,10-7-/t15-/m0/s1/
f/h17H could not be loaded.