35115-62-9 L-Proline, 1-(1-(N-(N2-(1-(N-(1-(N-(N2-(5-oxo-L-prolyl)-L-asparaginyl)-L-tryptophyl)-L-prolyl)-L-histidyl)-L-prolyl)-L-glutaminyl)-L-isoleucyl)-L-prolyl)- SQ 20,858 SQ 20858