3-Methyl-4-oxo-4H-thieno(2',3':4,5)pyrimido(2,1-b)benzoxazole-2-carboxylic acid ethyl ester;4H-Thieno(2',3':4,5)pyrimido(2,1-b)benzoxazole-2-carboxylic acid, 3-methyl-4-oxo-, ethyl ester;AC1MINXK;LS-152529;159852-70-7
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