17809
The naphthyl side chain was introduced via Wittig reaction and the aldehyde installed using directed ortho - metalation reaction of the substituted o - anisic acids .
 Chemical: naphthyl; Chemical: aldehyde; Chemical: o - anisic acids
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: naphthyl; Chemical: aldehyde; Chemical: o - anisic acids