InChI=1S/C21H23NO9/c1-22(2)16-10(25)6-11(26)21(31)15(16)18(28)14-13(19(21)29)17(27)12-8(20(14,30)7-23)4-3-5-9(12)24/h3-5,13-16,18,23-24,28,30-31H,6-7H2,1-2H3/t13?,14?,15?,16?,18?,20-,21+/m1/s1