5-ethyl-6-(1-naphthylmethyl)-2-thiouracil
5-ethyl-6-(1-naphthylmethyl)-2-thiouracil ??
??
5-ethyl-6-(1-naphthylmethyl)-2-thiouracil C??? ??, ??, ??
5-ethyl-6-(1-naphthylmethyl)-2-thiouracil ?? ?? ? ???
???
?? ??
5-ethyl-6-(1-naphthylmethyl)-2-thiouracil ?? ??
???( 0)?? ??