You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name [1-(1-amino-3-ethoxy-2,2-dimethylcyclobutanecarbonyl)piperidin-4-yl]-(4-methylpiperidin-1-yl)methanone ?
user
C21H37N3O3
assistant