InChI=1/C20H21NO7S/c1-9-4-15-18(19-17(9)10(2)6-27-19)11(3)12(20(24)28-15)5-16(23)21-13-7-29(25,26)8-14(13)22/h4,6,13-14,22H,5,7-8H2,1-3H3,(H,21,23)/t13-,14+/m0/s1/f/h21H D83DF56DE65C11FD