InChI=1/C16H18N2O3/c19-16(20)13-5-3-6-14-12(13)7-8-15(18-14)17-10-11-4-1-2-9-21-11/h3,5-8,11H,1-2,4,9-10H2,(H,17,18)(H,19,20)/t11-/m1/s1/f/h17-18H B200B0A488D6C11B