InChI=1S/C18H30O5/c1-2-3-9-12-15(19)18(23)16(20)13-10-7-5-4-6-8-11-14-17(21)22/h3,9-10,13,16,19-20,23H,2,4-8,11-12,14H2,1H3,(H,21,22)/b9-3-,13-10+,18-15?