6454
It was shown that PEG2000 - Tyr ( 6 ) undergoes thermoresponsive hydrogelation at a low concentration range of 0 . 25 - 3 . 0 wt % within a temperature range of 25 - 50 degrees C .
 Chemical: PEG2000 - Tyr ( 6 )
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: PEG2000 - Tyr ( 6 )