InChI=1S/C13H20O11/c14-4-5(3-6(15)16)1-2-7(17)23-13-10(20)8(18)9(19)11(24-13)12(21)22/h5,8-11,13-14,18-20H,1-4H2,(H,15,16)(H,21,22)