24349
After 4 - h incubation in supplemented S9 fraction , the MTX content was 35 % lower and 5 metabolites were identified : an acetoxy ester derivative ( never described before ) , two glutathione conjugates , a monocarboxylic acid derivative , and the naphtoquinoxaline , the later commonly related to MTX pharmacological effects .
 Chemical: MTX; Chemical: glutathione; Chemical: monocarboxylic acid; Chemical: naphtoquinoxaline; Chemical: MTX
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: MTX; Chemical: glutathione; Chemical: monocarboxylic acid; Chemical: naphtoquinoxaline; Chemical: MTX