InChI=1S/C19H28O7S/c1-18-6-4-12(26-27(23,24)25)8-11(18)2-3-13-14(18)5-7-19(10-20)15(13)9-16(21)17(19)22/h2,12-16,20-21H,3-10H2,1H3,(H,23,24,25)/t12?,13?,14?,15?,16?,18-,19+/m0/s1