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 7-ethyl-2-oxo-1-(3,3,3-trifluoropropyl)-4,5,6,7-tetrahydro-3H-benzimidazole-4-carboxamide .
user
C13H18F3N3O2
assistant