InChI=1/C18H18N2O6/c1-10-3-6-14(11(2)7-10)19-18(25)20-16(23)9-26-17(24)13-5-4-12(21)8-15(13)22/h3-8,21-22H,9H2,1-2H3,(H2,19,20,23,25)/f/h19-20H 9E6DA334A4834229