27180
As a result , we determined that a fosK - encoded cytochrome P450 monooxygenase is responsible for C - 18 hydroxylation , formation of an unsaturated lactone is dependent upon FosM , and the fosG gene product is involved in hydroxylation at C - 4 after the action of FosM to yield PD 113 , 271 from FST .
 Chemical: unsaturated lactone; Chemical: PD 113 , 271; Chemical: FST
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: unsaturated lactone; Chemical: PD 113 , 271; Chemical: FST