InChI=1S/C20H28N2O4S2/c1-15(13-21-27(3,23)24)17-5-9-19(10-6-17)20-11-7-18(8-12-20)16(2)14-22-28(4,25)26/h5-12,15-16,21-22H,13-14H2,1-4H3/t15-,16-/m0/s1