[CH3:1][CH:2]1[N:8](C(OC(C)(C)C)=O)[CH2:7][CH2:6][CH2:5][N:4]2[C:16]([C:19]([F:22])([F:21])[F:20])=[N:17][N:18]=[C:3]12.[ClH:23]>O1CCOCC1>[ClH:23].[CH3:1][CH:2]1[NH:8][CH2:7][CH2:6][CH2:5][N:4]2[C:16]([C:19]([F:22])([F:20])[F:21])=[N:17][N:18]=[C:3]12Compound from Step F (220 mg, 0.68 mmol) was treated with 4 N hydrogen chloride in dioxane at ambient temperature for 2 h. Concentration gave the title compound. MS 220.9 (M+1)
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