12166
Shortage of O ( 2 ) results in deranged metabolism and important changes in vascular tone with opposite effects on the systemic and pulmonary circulation .
 Chemical: O ( 2 )
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: O ( 2 )