You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-methoxyethyl 2-[(4-methoxycarbonylpiperidin-1-ium-1-yl)methyl]-5-methyl-4-oxo-3H-thieno[2,3-d]pyrimidine-6-carboxylate using the IUPAC nomenclature.
user
C19H26N3O6S+
assistant