| 英文名称: | | 4h-thieno(2',3':4,5)pyrimido(2,1-b)benzoxazole-2-carboxylic acid, 3-methyl-4-ox | | 3-methyl-4-oxo-4h-thieno(2',3':4,5)pyrimido(2,1-b)benzoxazole-2-carboxyl ic a | | 3':4,5)pyrimido(2,1-b)benzoxazole-2-carboxylic acid,3-methyl-4-oxo-4h-thieno(2 ethyl ester |
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