1642
Thus , the mutant may be used to effectively prevent ( - ) - cocaine from entering brain and producing physiological effects in the enzyme - based treatment of cocaine abuse .
 Chemical: ( - ) - cocaine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: ( - ) - cocaine 
Answer:
 Chemical: ( - ) - cocaine