InChI=1/C15H18N2O4/c18-12-3-1-10(11-2-4-14(20)16-15(11)12)13(19)9-17-5-7-21-8-6-17/h1-4,13,18-19H,5-9H2,(H,16,20)/t13-/m0/s1/f/h18h,16-17H 107DBC512F1FEEC1