InChI=1S/C17H21NO6S/c1-18-8-7-17-6-5-12(24-25(19,20)21)9-14(17)23-16-13(22-2)4-3-11(10-18)15(16)17/h3-6,12,14H,7-10H2,1-2H3,(H,19,20,21)/t12-,14-,17-/m0/s1