21516
For the OZ439 series , there was a good correlation between the antimalarial efficacy and ADME profiles in the rank order trioxolane > trioxane > tetraoxane .
 OZ439, trioxolane, trioxane, tetraoxane
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 OZ439, trioxolane, trioxane, tetraoxane