15272
A new C ( 30 ) linear polyacetylene compound designated petroacetylene ( 1 ) has been isolated from the marine sponge Petrosia solida Hoshino 1981 , collected off the coast of Amami - Oshima , Kagoshima Prefecture , Japan .
 polyacetylene, petroacetylene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 polyacetylene, petroacetylene