InChI=1S/C15H21NO8/c1-22-9-6-7(4-5-16)2-3-8(9)23-15-12(19)10(17)11(18)13(24-15)14(20)21/h2-3,6,10-13,15,17-19H,4-5,16H2,1H3,(H,20,21)