2-penten-4-ynoic acid, 3-methyl-5-phenyl-, ethyl ester, (2E)- InChI=1/C14H14O2/c1-3-16-14(15)11-12(2)9-10-13-7-5-4-6-8-13/h4-8,11H,3H2,1-2H3/b12-11 ethyl (2E)-3-methyl-5-phenylpent-2-en-4-ynoate