InChI=1S/C11H18N2O3S/c14-9(15)5-3-1-2-4-8-10-7(6-17-8)12-11(16)13-10/h7-8,10H,1-6H2,(H,14,15)(H2,12,13,16)/t7-,8-,10-/m0/s1