InChI=1/C13H18N2O4/c1-18-12(16)11-3-2-8-14(11)13(17)15-9-4-6-10(19-15)7-5-9/h4,6,9-11H,2-3,5,7-8H2,1H methyl 1-(2-oxa-3-azabicyclo[2.2.2]oct-5-en-3-ylcarbonyl)prolinate proline, 1-(2-oxa-3-azabicyclo[2.2.2]oct-5-en-3-ylcarbonyl)-, methyl ester