You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 6-chloro-N-[(1R)-2-(5-fluoro-1H-indol-2-yl)-1-(2H-tetrazol-5-yl)ethyl]-2H-chromene-3-carboxamide .
user
C21H16ClFN6O2
assistant