InChI=1S/C18H20O7S/c1-18-5-4-10-11(13(18)8-15(20)17(18)21)3-2-9-6-16(25-26(22,23)24)14(19)7-12(9)10/h6-7,10-11,13,19H,2-5,8H2,1H3,(H,22,23,24)/t10?,11?,13?,18-/m0/s1