30330
Linear correlations of < vh > at the " knee " temperature ( < vh > ( Tk ) ) with Vm , scaled and Vvdw gave good results for the [ C4MIM ] ( + ) series .
 [ C4MIM ] ( + )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 [ C4MIM ] ( + )