InChI=1S/C15H22O7S/c1-8-11(17)4-3-10-5-12-13(9(6-16)7-21-12)14(15(8,10)2)22-23(18,19)20/h7-8,10-11,14,16-17H,3-6H2,1-2H3,(H,18,19,20)