10473
Whereas the meta - carbaboranyl - substituted derivatives lacked COX inhibitory activity , an ortho - carbaboranyl analogue was active , but showed a selectivity shift toward COX - 1 .
 Chemical: meta - carbaboranyl; Chemical: ortho - carbaboranyl
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: meta - carbaboranyl; Chemical: ortho - carbaboranyl