4,5-Di-tert-butylthiophene-2,3-dicarboxylic acid dimethyl ester
4,5-Di-tert-butylthiophene-2,3-dicarboxylic acid dimethyl ester ??
??
4,5-Di-tert-butylthiophene-2,3-dicarboxylic acid dimethyl ester C??? ??, ??, ??
4,5-Di-tert-butylthiophene-2,3-dicarboxylic acid dimethyl ester ?? ?? ? ???
???
?? ??
4,5-Di-tert-butylthiophene-2,3-dicarboxylic acid dimethyl ester ?? ??
???( 0)?? ??
