13966
Thermal , NMR , fractionation , and mechanical characterizations confirmed the resulting polymer as a block copolymer of P3HP - b - P4HB .
 Chemical: P3HP - b - P4HB
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: P3HP - b - P4HB