The molecule is an organic cation resulting from the protonation of one of the nitrogens of ancitabine. It is a conjugate acid of an ancitabine.
hydron;(2R,4R,5R,6S)-4-(hydroxymethyl)-10-imino-3,7-dioxa-1,9-diazatricyclo[6.4.0.02,6]dodeca-8,11-dien-5-ol