8905
However , the ethylenic analogue was more effective than the cyclopropyl one in the melanophore aggregation bioassay , but was still less potent than the disubstituted 2 , 7 - dimethoxy - naphtalenic compounds .
 Chemical: ethylenic; Chemical: cyclopropyl; Chemical: 2 , 7 - dimethoxy - naphtalenic
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: ethylenic; Chemical: cyclopropyl; Chemical: 2 , 7 - dimethoxy - naphtalenic