20531
To investigate this and solution - phase results with other tripeptides delta - ( L - alpha - aminoadipoyl ) - L - homocysteinyl - D - Xaa , we have crystallised AhCV and delta - ( L - alpha - aminoadipoyl ) - L - homocysteinyl - D - S - methylcysteine ( AhCmC ) with IPNS and solved crystal structures for the resulting complexes .
 Chemical: delta - ( L - alpha - aminoadipoyl ) - L - homocysteinyl - D - Xaa; Chemical: AhCV; Chemical: delta - ( L - alpha - aminoadipoyl ) - L - homocysteinyl - D - S - methylcysteine; Chemical: AhCmC
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: delta - ( L - alpha - aminoadipoyl ) - L - homocysteinyl - D - Xaa, AhCV, delta - ( L - alpha - aminoadipoyl ) - L - homocysteinyl - D - S - methylcysteine, AhCmC 
Answer:
 Chemical: delta - ( L - alpha - aminoadipoyl ) - L - homocysteinyl - D - Xaa; Chemical: AhCV; Chemical: delta - ( L - alpha - aminoadipoyl ) - L - homocysteinyl - D - S - methylcysteine; Chemical: AhCmC