You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[6-[[6-[[6-[[6-acetamido-1-(benzhydrylamino)-1-oxohexan-2-yl]amino]-5-[2,6-bis[2,6-bis(2-methylheptanoylamino)hexanoylamino]hexanoylamino]-6-oxohexyl]amino]-5-[2,6-bis(2-methylheptanoylamino)hexanoylamino]-6-oxohexyl]amino]-5-(2-methylheptanoylamino)-6-oxohexyl]-2-methylheptanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C127H223N17O17
assistant