11312
( E ) - 2 - ( 3 - ( 3 - ( ( 3 - Bromophenyl ) amino ) - 2 - cyano - 3 - oxoprop - 1 - en - 1 - yl ) - 1H - indol - 1 - yl ) acetic acid ( 1 ) was discovered in a HTS campaign for CRTh2 receptor antagonists .
 Chemical: ( E ) - 2 - ( 3 - ( 3 - ( ( 3 - Bromophenyl ) amino ) - 2 - cyano - 3 - oxoprop - 1 - en - 1 - yl ) - 1H - indol - 1 - yl ) acetic acid
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: ( E ) - 2 - ( 3 - ( 3 - ( ( 3 - Bromophenyl ) amino ) - 2 - cyano - 3 - oxoprop - 1 - en - 1 - yl ) - 1H - indol - 1 - yl ) acetic acid