16574
The copolymers were degraded in a methanolic solution of 1 , 5 , 7 - triaza - bicyclo [ 4 . 4 . 0 ] dec - 5 - ene and the degradation was measured by ( 1 ) H NMR spectroscopic and gel permeation chromatographic analyses .
 Chemical: 1 , 5 , 7 - triaza - bicyclo [ 4 . 4 . 0 ] dec - 5 - ene; Chemical: ( 1 ) H
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: 1 , 5 , 7 - triaza - bicyclo [ 4 . 4 . 0 ] dec - 5 - ene; Chemical: ( 1 ) H