2,5-dibenzyl-1,3,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-4,6-dione

(2S)-2-[[(2S)-2-[[(2S)-2-amino-4-methylpentanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-4-methylpentanoic acid