You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule [(2S)-1-[(2-methylpropan-2-yl)oxy]-6-[(2-methylpropan-2-yl)oxycarbonylamino]-1-oxohexan-2-yl]azanium ?
user
C15H31N2O4+
assistant