You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(4-bromophenyl)-4-[(2,3,6-trifluoro-4-methoxybenzoyl)amino]thiophene-3-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H11BrF3NO4S
assistant