InChI=1S/C14H20O11/c15-6(16)4-2-1-3-5-10(23-5)13(22)25-14-9(19)7(17)8(18)11(24-14)12(20)21/h5,7-11,14,17-19H,1-4H2,(H,15,16)(H,20,21)