91037-75-1 Gdrgdsp Gly-arg-gly-asp-ser-pro Glycyl-arginyl-glycyl-aspartyl-seryl-proline Grgdsp L-Proline, 1-(N-(N-(N-(N2-glycyl-L-arginyl)glycyl)-L-alpha-aspartyl)-L-seryl)- L-Proline, glycyl-L-arginylglycyl-L-alpha-aspartyl-L-seryl-