2458
The first one is a new simple formulation of long circulating contrast agents , formulated from a commercial iodinated oil , and resulting in CT contrast agents containing more than twice the iodine concentration commercial contrast agents .
 Chemical: iodine
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: iodine