InChI=1/C15H18N2O4/c1-9(18)17-14-12(16)7-10(15(19)20)8-13(14)21-11-5-3-2-4-6-11/h2-6,8,12-14H,7,16H2,1H3,(H,17,18)(H,19,20)/t12-,13+,14+/m0/s1/f/h16-17H 016F530F75522B8B