InChI=1S/C22H22N2O5S/c1-22(2)17(21(27)28)24-19(26)15(20(24)30-22)23-18(25)16(13-9-5-3-6-10-13)29-14-11-7-4-8-12-14/h3-12,15-17,20H,1-2H3,(H,23,25)(H,27,28)/t15-,16?,17+,20-/m1/s1