25786
Their structures were characterised as 16 - deethylindanomycin ( 2 ) , iso - 16 - deethylindanomycin ( 3 ) , 16 - deethylindanomycin methyl ester ( 4 ) and iso - 16 - deethylindanomycin methyl ester ( 5 ) on the basis of NMR , HR - ESI - MS and CD evidences .
 Chemical: 16 - deethylindanomycin; Chemical: iso - 16 - deethylindanomycin; Chemical: 16 - deethylindanomycin methyl ester; Chemical: iso - 16 - deethylindanomycin methyl ester
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: 16 - deethylindanomycin; Chemical: iso - 16 - deethylindanomycin; Chemical: 16 - deethylindanomycin methyl ester; Chemical: iso - 16 - deethylindanomycin methyl ester