InChI=1S/C18H28O5/c19-14-10-9-12-17(21)15-16(20)11-7-5-3-1-2-4-6-8-13-18(22)23/h5,7,9,12,15,19,21H,1-4,6,8,10-11,13-14H2,(H,22,23)/b7-5-,12-9+,17-15-