You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N'-[(2R)-2-(furan-2-yl)-2-(1,2,3,4-tetrahydroisoquinolin-2-ium-2-yl)ethyl]-N-(2-morpholin-4-ium-4-ylethyl)oxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H32N4O4+2
assistant