1. School of Pharmacy Hangzhou Normal University Hangzhou 311121 P. R. China
2. Key Laboratory of Elemene Class Anti‐Cancer Chinese Medicine of Zhejiang Province Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province Collaborative Innovation Center of Chinese Medicines from Zhejiang Province Hangzhou Normal University Hangzhou 311121 P. R. China
3. College of Material, Chemistry and Chemical Engineering Key Laboratory of Organosilicon Chemistry and Material Technology Ministry of Education, Hangzhou Normal University Hangzhou 311121 P. R. China