InChI=1/C15H17N3O5/c1-4-22-14(19)10-6-7-13(21-3)11(8-10)9-12(17-18-16)15(20)23-5-2/h6-9H,4-5H2,1-3H3/b12-9 benzoic acid, 3-[(1Z)-2-azido-3-ethoxy-3-oxo-1-propenyl]-4-methoxy-, ethyl ester ethyl 3-[(1Z)-2-azido-3-ethoxy-3-oxoprop-1-en-1-yl]-4-methoxybenzoate