169181-26-4

L-Valinamide,N,b,b-trimethyltryptophyl-N-[4-[[4-[(aminoiminomethyl)amino]-1-carboxybutyl]amino]-3-methyl-1-(1-methylethyl)-4-oxo-2-butenyl]-N,3-dimethyl-,[S-[R*,R*-(E)]]-