12301
Isotretinoin is a retinoic acid frequently used in monotherapy or combined with narrow - band ultraviolet B ( NBUVB ) irradiation to treat patients with acne and psoriasis vulgaris .
 Chemical: Isotretinoin; Chemical: retinoic acid
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: Isotretinoin, retinoic acid 
Answer:
 Chemical: Isotretinoin; Chemical: retinoic acid