The natural stable isotope index for de novo structural elucidation of phytomolecules with geographical and biological tracing - Xiaojing Yan; Xin Zhou; Mingyang Gong; Weidan Li; Mingyue Zhang; Tianci Huo; Xinyu Jiang; Xiaoyuan Hu; Xingchen Huang; Linhui Liu; Xue Feng; Qisong Zhang; et al. (Analytica Chimica Acta, 2025)