methoxyl poly(ethylene glycol)-b-poly(L-lactide-co-2-methyl-2-(3-(2,3-dihydroxylpropylthio)propyloxycarbonyl)propylene carbonate 1-(carboxymethyl)thymine)
methoxyl poly(ethylene glycol)-b-poly(l-lactide-co-2-methyl-2-(3-(2,3-dihydroxylpropylthio)propyloxycarbonyl)propylene carbonate 1-(carboxymethyl)thymine)