127959-11-9 L-Tyrosine, N-(N-(1-(N-(N-(1-(N-L-tyrosyl-L-seryl)-L-prolyl)-L-threonyl)-L-seryl)-L-prolyl)-L-seryl)- L-Tyrosyl-L-seryl-L-prolyl-L-threonyl-L-seryl-L-prolyl-L-seryl-L-tyrosine Tyr-ser-pro-thr-ser-pro-ser-tyr Tyrosyl-seryl-prolyl-threonyl-seryl-prolyl-seryl-tyrosine Ysptspsy