141922-12-5

L-Serine,N-[N-[N-[N-[1-[1-[N-[1-[N-[N-(N-L-seryl-L-a-glutamyl)-L-alanyl]-L-alanyl]-L-prolyl]-L-valyl]-L-prolyl]-L-prolyl]-L-threonyl]-L-a-aspartyl]-L-a-aspartyl]-