You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R)-2-[4-[2-(2,6-dimethylanilino)-2-oxoethyl]piperazine-1,4-diium-1-yl]-N-ethyl-N-phenylpropanamide .
user
C25H36N4O2+2
assistant