1653
For this , four different formulations containing vitamin A palmitate and different UV - filters combinations , two of them considered photostable and two of them considered photounstable , were prepared .
 Chemical: vitamin A palmitate
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: vitamin A palmitate