You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-[(2-methylpropan-2-yl)oxycarbonyl]-2,3-dihydro-1H-quinoxalin-5-yl]boronic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H19BN2O4
assistant