The research field of nitrogen (N)-doped nanocarbon materials has been expanding over the last few decades because N doping creates interactive sites in pristine nanocarbons and enhances their electronic properties (Figure ). Whereas current productions of intrinsically N-doped nanocarbons by posttreatment or in situ synthesis methods provide random dopant patterns and structures, organic synthesis, in contrast, enables the formation of structurally uniform and atomically precise carbon nanostructures. Such nanocarbon structures, also called molecular nanocarbons, are of high importance for their use as discrete models, ligands, electronically tunable organic materials, and templates for the growth of precise large nanocarbons. For example, a number of N-doped nanographenes have been reported to date as discrete models for N-doped graphene sheets (Figure ). Their unique properties and tunable electronic structures with structural uniformity have attracted considerable attention. N-doped carbon nanotubes (NCNTs), which incorporate nitrogen atoms in their tubular carbon structures (Figure ), exhibit excellent electrochemical properties; thus, they found application in diverse fields, such as catalysis, lithium-ion batteries, photovoltaics, and supercapacitors. 1 Despite such high interests of NCNTs, the corresponding N-doped aromatic belts, which bear the belt structures of NCNT units, are unknown. Their highly strained tubular belt structures formed by annulated conjugated aromatic rings pose formidable synthetic challenges. 3 Thus, only strain-relieved belt molecules, such as planar, bowlshaped, and triangle-or square-shaped belts, have been reported. An N-doped aromatic belt with nonconjugated sp 3linkers can also release the belt strain. A recent unsuccessful synthetic endeavor of a tetraazapentacene belt also attests to the aforementioned challenge associated with the synthesis of fully conjugated N-doped aromatic belts. Herein, we report the synthesis of an N-doped aromatic belt, an atomically precise NCNT unit, via annulative amination reactions of the Z-stilbene-based macrocyclic intermediate 1 (Figure ). The crystal structure and optical properties of 2 are presented. We also report successful isolations of the corresponding dication salts of 2 obtained via chemical oxidation.