Building Cyclic Planar Chirality via Intermolecular [2+2] Photocycloaddition. - Tang, Ke; Chen, Hailong; Zhang, Jincheng; Huang, Jing; Xie, Wanrong; Deng, Ran; Xu, Minghui; Gui, Yong‐Yuan; Liu, Xiang‐Yang; Xiang, Haifeng; Song, Jintong (Chinese Journal of Chemistry, 2026)