1-(2,5-Dioxopyrrolidin-1-yl) 44-methyl 23-oxo-4,7,10,13,16,19-hexaoxa-22-azatetratetracontanedioate 250mg

1-(2,5-Dioxopyrrolidin-1-yl) 44-methyl 23-oxo-4,7,10,13,16,19-hexaoxa-22-azatetratetracontanedioate 250mg