4574
A gel with 5 % particle loading can deliver timolol at therapeutic doses for about a month at room temperature , with a minimal impact on critical lens properties .
 Chemical: timolol
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: timolol 
Answer:
 Chemical: timolol