You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 3-deuterio-2-(4-methoxyphenyl)-6,7-dihydro-5H-pyrrolo[2,1-c][1,2,4]triazol-4-ium is given. What is its corresponding molecular formula?
user
C12H14N3O+
assistant