7659
In order to reduce the likelihood of off - target effects and to improve compound stability in biological systems , we developed an analogue of compound 1 that lacks maleimide - based reactivity but retains RAD51 inhibitory activity .
 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