COCOC1C=CC(C(C2C=CC(OCOC)=CC=2)C2C=CC=C[C:13]=2[N:18](C)[C:19]([CH:21]2[CH2:26][CH2:25][CH2:24][CH2:23][CH2:22]2)=[O:20])=CC=1>C(OCC)(=O)C.Cl>[CH3:13][NH:18][C:19]([CH:21]1[CH2:26][CH2:25][CH2:24][CH2:23][CH2:22]1)=[O:20]In 50 ml of ethyl acetate saturated with hydrogen chloride was dissolved 2.18 g of compound 137 obtained by Example 137, and the solution was stirred for 1 hour. Thereafter, the solvent was evaporated under reduced pressure, and the residue was recrystallized from methanol to afford 0.31 g of the desired compound (Compound 138).
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