Structural optimization of benzophenanthridinone and benzophenanthridine Tyrosyl-DNA phosphodiesterase 1 inhibitors and their radiosensitizing activity. - Hu DX; Li YW; Chen A; Qin C; Zhang JQ; Liang ZQ; Agama K; Pommier Y; Wang H; An LK (European journal of medicinal chemistry, 2026)