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Anti - proliferative effect of ( 19Z ) - halichondramide , a novel marine macrolide isolated from the sponge Chondrosia corticata , is associated with G2 / M cell cycle arrest and suppression of mTOR signaling in human lung cancer cells .
 Chemical: ( 19Z ) - halichondramide
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: ( 19Z ) - halichondramide