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 2-[[(4aS)-1,1,4a-trimethyl-7-propan-2-yl-3,9,10,10a-tetrahydro-2H-phenanthren-4-ylidene]amino]oxyethanamine ?
user
C22H34N2O
assistant