12637
Hydrolysis of isocoumarin to keto acid ( 3 ) followed by reduction and cyclodehydration of hydroxy acid analog ( 4 ) afforded ( +/- ) - 6 , 8 - dimethoxy - 3 - ( 4 - methoxyphenyl ) - 3 , 4 - dihydroisocoumarin ( 5 ) .
 Chemical: isocoumarin; Chemical: keto acid; Chemical: hydroxy acid; Chemical: ( +/- ) - 6 , 8 - dimethoxy - 3 - ( 4 - methoxyphenyl ) - 3 , 4 - dihydroisocoumarin
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: isocoumarin; Chemical: keto acid; Chemical: hydroxy acid; Chemical: ( +/- ) - 6 , 8 - dimethoxy - 3 - ( 4 - methoxyphenyl ) - 3 , 4 - dihydroisocoumarin