10637
For instance , doubling the amount of maleimide sites present in the hydrogel system decreased the amount of peptide released from approximately 60 % to about 40 % in the same span of time .
 Chemical: maleimide
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: maleimide