InChI=1S/C12H18O11/c1-3(9(16)17)2-4(10(18)19)22-12-7(15)5(13)6(14)8(23-12)11(20)21/h3-8,12-15H,2H2,1H3,(H,16,17)(H,18,19)(H,20,21)