3691
Arsenic trioxide ( As ( 2 ) O ( 3 ) ) , which is used to treat acute promyelocytic leukemia , can cause LQTS type 2 ( LQT2 ) by reducing the hERG current through the diversion of hERG trafficking to the cytoplasmic membrane .
 Chemical: Arsenic trioxide; Chemical: As ( 2 ) O ( 3 )
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: Arsenic trioxide; Chemical: As ( 2 ) O ( 3 )