*3.2. Plant Material*

The plant samples of *C. hypoleucophylla* were collected in Kaohsiung city, Taiwan, in May 2018. The plant material was identified by one of the authors, Dr. Ming-Hong Yen. A voucher sample (specimen code: CH001) was deposited at the Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.
