6696
A variety of 5 - , 6 - and 8 - ( 4 - aminobutyloxy ) quinolines as novel oxygen analogues of known 4 - and 8 - ( 4 - aminobutylamino ) quinoline antimalarial drugs was generated from hydroxyquinolines through a three - step approach with a rhodium - catalyzed hydroformylation as the key step .
 Chemical: 5 - , 6 - and 8 - ( 4 - aminobutyloxy ) quinolines; Chemical: oxygen; Chemical: 4 - and 8 - ( 4 - aminobutylamino ) quinoline; Chemical: hydroxyquinolines; Chemical: rhodium
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: 5 - , 6 - and 8 - ( 4 - aminobutyloxy ) quinolines; Chemical: oxygen; Chemical: 4 - and 8 - ( 4 - aminobutylamino ) quinoline; Chemical: hydroxyquinolines; Chemical: rhodium