Inclusion Criteria:  A healthy male adult. Age is between 18 and 45, inclusive. Body mass index is between 19 and 26, inclusive. Voluntarily to provide informed consent form. Willing and able to communicate with investigators and complete the trial according to clinical trial protocol.  Exclusion Criteria:  Any abnormal and clinical significant findings. A positive examination result of HBsAg/HBeAg, HIV antibody and treponema pallidum antibody. Volunteers who had participated in a radiolabeled clinical study or were exposed to significant levels of radiation for any reasons within the 12 months prior to the study. Volunteers who had used of prescription or herbal products that may affect the drug metabolism within 30 days before the study. Volunteers who had blood loss/donation up to 400 mL within 3 months before the screening, or received blood transfusion within 1 month.