Sesquiterpenoid isolated from Colletotrichum truncatum derived from Gynura japonica: isolation, structure elucidation, and biological activity. - Riga R; Oktria W; Putra A; Suryelita S; Agusta AL; Suryani O; Etika SB; Fitri BY; Mulia M; Nasra E; Kurniawati D; Arif K; et al. (Natural product research, 2026)