You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
sodium;N-[1-(4-benzhydrylpiperazin-1-yl)-4-methyl-1-oxopentan-2-yl]-3-carboxyoxirane-2-carboximidate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H32N3NaO5
assistant