You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule N-[2-[5-(diethylaminomethyl)-3',3'-dimethylspiro[benzo[f][1,4]benzoxazine-3,2'-indole]-1'-yl]ethyl]-N-propylpropan-1-amine ?
user
C34H46N4O
assistant