Helenalin: a multifaceted sesquiterpene lactone with diverse biological activities—an integrative pharmacological and computational evidence - Iqra Farzeen; Zunaira Jaan; Maryam Batool; Muhammad Muzammil Nazir; Derya Karatas Yeni; Muhammad Umar Ijaz; Asma Ashraf (Naunyn-Schmiedeberg's Archives of Pharmacology, 2026)