15818
Vibrational and quantum chemical studies suggest the presence of the syn and anti conformers ( SCN group with respect to the C = O bond ) in the gas phase for both constitutional isomers .
 Chemical: SCN; Chemical: C = O
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: SCN; Chemical: C = O