poly(sarcoyl-glycyl-phenylalanyl-leucyl-glycyl-aminoethylaminocarbonylmethyl(N-methyl)amino-co-alpha,omega-bis(oxiranylmethyl)poly(ethylene glycol))
poly(sarcoyl-glycyl-phenylalanyl-leucyl-glycyl-aminoethylaminocarbonylmethyl(n-methyl)amino-co-alpha,omega-bis(oxiranylmethyl)poly(ethylene glycol))