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The title compound was prepared by the procedure described in the preparation of compound 8, except that 2-iodobenzyl chloride was used as the benzylating reagent. 1H-NMR (400 MHz, CDCl3-CD3OD 10:1): δ 7.76 (d, J=7.6 Hz, 1H), 7.21 (t, J=7.3 Hz, 1H), 6.89 (t, J=7.2 Hz, 1H), 6.79 (d, J=7.3 Hz, 1H), 5.26 (s, 1H), 4.79-4.92 (ABq, J=34.1, 6.7.0 Hz, 2H), 3.27 (m, 1H), 3.13 (s, 1H), 2.85 (d, J=11.6 Hz, 1H), 2.70 (m, 1H), 2.41 (m, 1H), 2.02 (m, 1H), 1.60 (m, 1H), 1.45 (m, 2H). MS (ES) [m+H] calc'd for C16H20IN4O2, 427.1; found, 427.1.