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 4-[(7-methoxy-1,2,3,4-tetrahydronaphthalen-2-yl)-[4-(4-phenylpiperazin-1-yl)butyl]amino]butanenitrile ?
user
C29H40N4O
assistant