9787
In vitro anti - cancer screening against MCF - 7 ( mammary ) , HEK - 293 ( kidney ) , PC - 3 ( prostate ) , HCT - 15 ( colon ) and HepG - 2 ( liver ) cancer cell lines suggest that the n - Oct ( 2 ) Sn ( H ( 2 ) Or ) ( 2 ) is the most active complex among all of the studied complexes .
 Chemical: n - Oct ( 2 ) Sn ( H ( 2 ) Or ) ( 2 )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: n - Oct ( 2 ) Sn ( H ( 2 ) Or ) ( 2 )