11640
Reaction of N - formylnorglaucine ( 3a ) with 90 % H2SO4 , however , yielded the 9 - sulfonyl - seco product as a major product .
 Chemical: N - formylnorglaucine; Chemical: H2SO4; Chemical: 9 - sulfonyl - seco
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: N - formylnorglaucine; Chemical: H2SO4; Chemical: 9 - sulfonyl - seco