Calcineurin substrate

(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[2-[[(2S)-1-[(2S,3S)-2-[[(2S)-1-[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-carboxypropanoyl]amino]-4-methylpentanoyl]amino]-3-carboxypropanoyl]amino]-3-methylbutanoyl]pyrrolidine-2-carbonyl]amino]-3-methylpentanoyl]pyrrolidine-2-carbonyl]amino]acetyl]amino]-5-carbamimidamidopentanoyl]amino]-3-phenylpropanoyl]amino]-3-carboxypropanoyl]amino]-5-carbamimidamidopentanoyl]amino]-5-carbamimidamidopentanoyl]amino]-3-methylbutanoyl]amino]-3-hydroxypropanoyl]amino]-3-methylbutanoyl]amino]propanoyl]amino]propanoyl]amino]pentanedioic acid