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. Hrms-(tof-ms and . Es-+-;-m-+-h-+-]-calcd, CDCl 3 ): d = 10.70 (br s, 1 H), 8.15 (s, 1 H), 7.78, 7.56 (2 × d, J = 8.1 Hz, 2 H), 7.15 (t, J = 8.1 Hz, 1 H), 3.46 (s, 1 H). 13 C NMR (75 MHz, For 5: mp 160.9 °C. MS (EI): m/z = 323

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