ethyl 2-[[N'-[(2S)-butan-2-yl]carbamimidoyl]sulfanylmethyl]-5-methyl-4-oxo-3H-thieno[2,3-d]pyrimidine-6-carboxylate
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ethyl 2-[[N'-[(2S)-butan-2-yl]carbamimidoyl]sulfanylmethyl]-5-methyl-4-oxo-3H-thieno[2,3-d]pyrimidine-6-carboxylate以上