You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1R,5R,6S,7R)-N-[(1-ethylbenzimidazol-2-yl)methyl]-3-(2-methoxyethyl)-4-oxo-10-oxa-3-azatricyclo[5.2.1.01,5]dec-8-ene-6-carboxamide into its molecular formula.
user
C22H26N4O4
assistant