heksafluorofosfat(3-)
N-[(9H-fluorén-9-ylmetoxy)karbonyl]-α-L-glutamyl-N6-(terc-butoxykarbonyl)-L-lysyl-N-trityl-L-asparaginyl-α-L-glutamyl-N-trityl-L-glutaminyl-α-L-glutamyl-L-leucyl-L-leucyl-α-L-glutamyl-L-leucín, 1,4,6,9-tetra-terc-butyl ester