11970
A divergent synthesis was used , with all compounds being elaborated from a single chiral aldehyde derived from ethyl lactate .
 Chemical: aldehyde; Chemical: ethyl lactate
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: aldehyde; Chemical: ethyl lactate