2-hexynoic acid, 6-oxo-6-phenyl-, methyl ester InChI=1/C13H12O3/c1-16-13(15)10-6-5-9-12(14)11-7-3-2-4-8-11/h2-4,7-8H,5,9H2,1H methyl 6-oxo-6-phenylhex-2-ynoate