4078
Curiously , toxicities of the racemate and ( + ) enantiomer were not significantly different , even though the racemate contains 50 % of the ( + ) enantiomer and 50 % of the less toxic ( - ) enantiomer .
 None
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:  
Answer:
 None