9554
The molecular mechanism studies suggested that neoechinulin A may block the phosphorylation of mitogen - activated protein kinase ( MAPK ) molecule p38 , apoptosis signal - regulating kinase 1 ( ASK - 1 ) and nuclear translocation of nuclear factor - kappa B ( NF - kappa B ) p65 and p50 subunits .
 neoechinulin A
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 neoechinulin A