22463
A series of ( S ) - 2 - ( 2 - ( diethylamino ) - 5 - ( N - alkyl - N - sulfonamido ) pyrimidin - 4 - ylamino ) - 3 - ( 4 - ( carbamoyloxy ) phenyl ) propanoic acid is discovered as orally available VLA - 4 antagonists .
 Chemical: ( S ) - 2 - ( 2 - ( diethylamino ) - 5 - ( N - alkyl - N - sulfonamido ) pyrimidin - 4 - ylamino ) - 3 - ( 4 - ( carbamoyloxy ) phenyl ) propanoic 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: ( S ) - 2 - ( 2 - ( diethylamino ) - 5 - ( N - alkyl - N - sulfonamido ) pyrimidin - 4 - ylamino ) - 3 - ( 4 - ( carbamoyloxy ) phenyl ) propanoic acid