2-(2-(((Benzyloxy)carbonyl)amino)thiazol-4-yl)-5-((3-methylbut-2-en-1-yl)oxy)-5-oxopent-2-enoic acid 5g

2-(2-(((Benzyloxy)carbonyl)amino)thiazol-4-yl)-5-((3-methylbut-2-en-1-yl)oxy)-5-oxopent-2-enoic acid 5g