You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-4-[(2R)-3-cyclohexyl-2-(cyclohexylamino)propanoyl]-3-(thiophen-2-ylmethylcarbamoyl)piperazine-1-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H40N4O4S
assistant