1. Department of Natural Products Chemistry, Key Lab of Chemical Biology of the Ministry of Education, Shandong University, Jinan 250012, People’s Republic of China
2. Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250012, People’s Republic of China
3. School of Pharmacy, Linyi University, Linyi 27600, People’s Republic of China