InChI=1S/C16H25N3O7S/c1-2-3-10(6-7-20)27-9-12(15(24)18-8-14(22)23)19-13(21)5-4-11(17)16(25)26/h2-3,7,10-12H,4-6,8-9,17H2,1H3,(H,18,24)(H,19,21)(H,22,23)(H,25,26)/b3-2+