1720
Effects of UMB24 and ( + / - ) - SM 21 , putative sigma2 - preferring antagonists , on behavioral toxic and stimulant effects of cocaine in mice .
 Chemical: UMB24; Chemical: SM 21; Chemical: cocaine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: UMB24; Chemical: SM 21; Chemical: cocaine