2(S)-[(4(R)-amino-1-benzenesulfonyl-pyrrolidine-2(S)-carbonyl)-amino]-4-[4-methyl-2(S)-(methyl-{2-[4-(3-o-tolyl-ureido)-phenyl]-acetyl}-amino)-pentanoylamino]-butyric acid 、 alkaline earth salt of/the/ methylsulfuric acid 生成 2(S)-[(4(R)-(methylpolyethyleneglycol(CH
2CH
2CO)amino)-1-benzenesulfonylpyrrolidine-2(S)-carbonyl)amino]-4-[4-methyl-2(S)-(methyl-{2-[4-(3-o-tolylureido)phenyl]acetyl}amino)pentanoylamino]butyric acid