Cistanoside F is a phenylethanoid glycosid isolated from Cistanche deserticola, with antioxidative effect[1].
References
[1] Xiong Q, et al. Antioxidative effects of phenylethanoids from Cistanche deserticola. Biol Pharm Bull. 1996 Dec;19(12):1580-5. DOI:10.1248/bpb.19.1580