2-propenoic acid, 3-phenyl-, 4-hydroxyphenyl ester, (2E)- 4-hydroxyphenyl (2E)-3-phenylacrylate InChI=1/C15H12O3/c16-13-7-9-14(10-8-13)18-15(17)11-6-12-4-2-1-3-5-12/h1-11,16H/b11-6