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 ethane;1-methyl-4-(1,2,3,4-tetrahydronaphthalen-1-yl)piperazine;1-methyl-4-(5,6,7,8-tetrahydronaphthalen-1-yl)piperazine .
user
C32H50N4
assistant