InChI=1/C14H17N3O4/c1-20-13(18)11-5-3-9(16-11)8(7-15)10-4-6-12(17-10)14(19)21-2/h11-12,16H,3-6H2,1-2H3/b9-8 methyl (5E)-5-{cyano[2-(methoxycarbonyl)-3,4-dihydro-2H-pyrrol-5-yl]methylene}prolinate proline, 5-[cyano[3,4-dihydro-2-(methoxycarbonyl)-2H-pyrrol-5-yl]methylene]-, methyl ester, (5E)-