(2E)-2-cyano-3-phenylacrylic acid 2-propenoic acid, 2-cyano-3-phenyl-, (2E)- InChI=1/C10H7NO2/c11-7-9(10(12)13)6-8-4-2-1-3-5-8/h1-6H,(H,12,13)/b9-6