InChI=1S/C21H34O8/c1-11-6-14(23)7-12(2)21(11)5-4-13(8-21)20(3,27)10-28-19-18(26)17(25)16(24)15(9-22)29-19/h6,12-13,15-19,22,24-27H,4-5,7-10H2,1-3H3/t12?,13?,15-,16-,17+,18-,19-,20?,21?/m1/s1