InChI=1/C18H26N2O4/c1-13(2)16(17(21)24-18(3,4)5)19-12-6-7-14-8-10-15(11-9-14)20(22)23/h6-11,13,16,19H,12H2,1-5H3/b7-6 tert-butyl N-[(2E)-3-(4-nitrophenyl)prop-2-en-1-yl]valinate valine, N-[(2E)-3-(4-nitrophenyl)-2-propenyl]-, 1,1-dimethylethyl ester