(R)-2-(6-(Acetoxymethyl)-5-oxo-2,3-dihydro-5H-spiro[indolizine-1,2'-[1,3]dioxolan]-7-yl)-1-ethoxy-1-oxobutan-2-yl tosyl-L-prolinate 250mg

(R)-2-(6-(Acetoxymethyl)-5-oxo-2,3-dihydro-5H-spiro[indolizine-1,2'-[1,3]dioxolan]-7-yl)-1-ethoxy-1-oxobutan-2-yl tosyl-L-prolinate 250mg