10478
Under consideration of compound concentration and compound specific estrogenic activity the 4 - iso - nonylphenols contributed most to the observed estrogenic effect .
 Chemical: 4 - iso - nonylphenols
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: 4 - iso - nonylphenols