You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-(3-ethylpentan-2-yl)-4-[(2-methylpropan-2-yl)oxycarbonylamino]cyclopentane-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H35NO4
assistant