<http://webisa.webdatacommons.org/prov/215955941>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/128204924> .
<http://webisa.webdatacommons.org/128204924>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/128204924>	<http://www.w3.org/ns/prov#value>	"Provided is a polyethylene glycol methyl ether-polylactide block copolymer with an amino acid end group as shown in formula (I), wherein R is an amino acid group, a=11-455, b=3-300, the molecular weight of the polyethylene glycol methyl ..." .
<http://webisa.webdatacommons.org/128204924>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sumobrain.com> .