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 (4aS,4bR,8S,10aR,10bS,12aS)-3-amino-8-hydroxy-10a,12a-dimethyl-2-pyridin-2-yl-4a,4b,5,7,8,9,10,10b,11,12-decahydro-4H-chrysen-1-one .
user
C25H32N2O2
assistant