16570
Tacticity - induced changes in the micellization and degradation properties of poly ( lactic acid ) - block - poly ( ethylene glycol ) copolymers .
 Chemical: poly ( lactic acid ) - block - poly ( ethylene glycol )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: poly ( lactic acid ) - block - poly ( ethylene glycol )