1810
Cells were pretreated with maltolyl p - coumarate , before exposed to amyloid beta peptide ( 1 - 42 ) , glutamate or H2O2 .
 Chemical: maltolyl p - coumarate; Chemical: amyloid beta peptide ( 1 - 42 ); Chemical: glutamate; Chemical: H2O2
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: maltolyl p - coumarate, amyloid beta peptide ( 1 - 42 ), glutamate, H2O2 
Answer:
 Chemical: maltolyl p - coumarate; Chemical: amyloid beta peptide ( 1 - 42 ); Chemical: glutamate; Chemical: H2O2