(2Z)-4-{[2-hydroxy-1-(2-methoxy-6-methylphenyl)ethyl]amino}-4-oxobut-2-enoic acid 2-butenoic acid, 4-[[2-hydroxy-1-(2-methoxy-6-methylphenyl)ethyl]amino]-4-oxo-, (2Z)- InChI=1/C14H17NO5/c1-9-4-3-5-11(20-2)14(9)10(8-16)15-12(17)6-7-13(18)19/h3-7,10,16H,8H2,1-2H3,(H,15,17)(H,18,19)/b7-6