(R)-3-((S)-5-((R)-4-(methoxycarbonyl)thiazolidin-3-yl)-5-oxo-2-((R)-5-oxopyrrolidine-2-carboxamido)pentanoyl)thiazolidine-4-carboxylic acid
(R)-3-((S)-5-((R)-4-(methoxycarbonyl)thiazolidin-3-yl)-5-oxo-2-((R)-5-oxopyrrolidine-2-carboxamido)pentanoyl)thiazolidine-4-carboxylic acid