You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[(2-bromo-4-phosphanyl-5,6,6a,7,8,9,10,10a-octahydrophenanthridin-9-yl)methylamino]acetic acid .
user
C16H22BrN2O2P
assistant