C(OC(CCC([O:10][C:11]1[C:12]([CH3:29])=[C:13]([CH3:28])[C:14]2[O:18][CH:17]([CH2:19][CH2:20][C:21](OCC)=[O:22])[S:16][C:15]=2[C:26]=1[CH3:27])=O)=O)C.C(OC1C(C)=C(C)C2OC(C)SC=2C=1C)(=O)C>>[OH:10][C:11]1[C:12]([CH3:29])=[C:13]([CH3:28])[C:14]2[O:18][CH:17]([CH2:19][CH2:20][CH2:21][OH:22])[S:16][C:15]=2[C:26]=1[CH3:27]Ethyl 3-[5-(3-ethoxycarbonylpropionyloxy)-4,6,7-trimethyl-1,3-benzoxathiole-2-yl)propionate (prepared as described in Example 32) was used in the same process as described in (1) above, to give the title compound, whose melting point, infrared absorption spectrum and mass spectrum were the same as those of the product described in (a) above.
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