You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name ethane;[2-(methylamino)-3-oxobutyl] 4-benzylpiperazine-1-carboxylate;1-methylcyclopentane-1-carboxylic acid into its molecular formula.
user
C26H43N3O5
assistant