1053
This study discloses strong in vitro antileishmanial activity of 2 - methyl - 5 - ( 3 ' - methyl - but - 2 ' - enyloxy ) - [ 1 , 4 ] naphthoquinone ( 1 ) , a prenyloxy - naphthoquinone isolated and characterised from roots of the plant Plumbago zeylanica ( family - Plumbaginaceae ) .
 Chemical: 2 - methyl - 5 - ( 3 ' - methyl - but - 2 ' - enyloxy ) - [ 1 , 4 ] naphthoquinone; Chemical: prenyloxy - naphthoquinone
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: 2 - methyl - 5 - ( 3 ' - methyl - but - 2 ' - enyloxy ) - [ 1 , 4 ] naphthoquinone; Chemical: prenyloxy - naphthoquinone