You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,4R)-1-[(2S)-5-[[amino(nitramido)methylidene]amino]-2-[(2-methylpropan-2-yl)oxycarbonylamino]pentanoyl]-4-methylpiperidine-2-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H32N6O7
assistant