InChI=1S/C20H28O7S/c1-20-7-6-11-12-8-17(25-2)18(26-3)10-14(12)16(27-28(22,23)24)9-13(11)15(20)4-5-19(20)21/h8,10-11,13,15-16,19,21H,4-7,9H2,1-3H3,(H,22,23,24)/t11?,13?,15?,16?,19?,20-/m0/s1