An 18-Porphyrin Nanoring at the Size Limit for Global Aromaticity - Jake M. Holmes; Henrik Gotfredsen; Lene Gödde; Janko Hergenhahn; Kavita Rani; Keigo E. Yamada; Jie-Ren Deng; Liv Warwick; Michael Clarke; Matthew Edmondson; James N. O’Shea; Alex Saywell; et al. (Journal of the American Chemical Society, 2025)