123924-38-9 L-Leucine, N-(N-(N-(N2-(N-L-seryl-L-alpha-glutamyl)-L-lysyl)-L-alpha-aspartyl)-L-alpha-glutamyl)- Sekdel sequence Ser-glu-lys-asp-glu-leu Seryl-glutamyl-lysyl-aspartyl-glutamyl-leucine