18981
Here we first demonstrate that asperolide A , a very recently reported marine - derived tetranorditerpenoid , leads to the inhibition of NCI - H460 lung carcinoma cell proliferation by G2 / M arrest with the activation of the Ras / Raf / MEK / ERK signaling and p53 - dependent p21 pathway .
 Chemical: asperolide A; Chemical: tetranorditerpenoid
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: asperolide A; Chemical: tetranorditerpenoid