InChI=1S/C14H18N2O7S/c1-6-5-24-12-9(11(19)16(12)10(6)14(22)23)15-8(18)4-2-3-7(17)13(20)21/h7,9,12,17H,2-5H2,1H3,(H,15,18)(H,20,21)(H,22,23)/t7?,9-,12-/m1/s1