Relative Intensity 120 100 80 40 20 0 15 178 20 Lipu 30042 40 55 sense 00 71 7805 60 2-Propenoic acid, 3-phenyl-, ethyl ester Mass Spectrum 77 77907 wuli 80 989 m/z 103 100 100 1191 www 120 131 133 140 1648 Ik 15/12 160 170 176 1777 180

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