InChI=1S/C21H27NO6/c1-12(5-3-4-10-23)11-13(2)18(25)16-20(27)17(22-21(16)28)19(26)14-6-8-15(24)9-7-14/h3-4,6-9,12-13,17,19,23-26H,5,10-11H2,1-2H3,(H,22,28)/b4-3+,18-16+/t12-,13-,17-,19-/m0/s1