InChI=1S/C19H25NO8/c1-2-26-18(25)13(7-10-8-20-12-6-4-3-5-11(10)12)27-19-17(24)16(23)15(22)14(9-21)28-19/h3-6,8,13-17,19-24H,2,7,9H2,1H3