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 2-[(3R,4S,5S,6R)-5-[[5-[acetyl(methyl)amino]-2-methoxyphenyl]methylamino]-6-benzhydryl-1-azabicyclo[2.2.2]octan-3-yl]acetamide .
user
C33H40N4O3
assistant