16308
The ratio of average cumulation of excretion of lactone to carboxylate reached approximately 1 to 1 in urine .
 Chemical: lactone; Chemical: carboxylate
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: lactone; Chemical: carboxylate