tyrosyl-cyclo(lysyl-phenylalanyl-alanyl)
tyrosyl-cyclo(lysyl-phenylalanyl-alanyl) ??
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tyrosyl-cyclo(lysyl-phenylalanyl-alanyl) C??? ??, ??, ??
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tyrosyl-cyclo(lysyl-phenylalanyl-alanyl) ?? ??
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