You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-[(2,5-difluorophenyl)methyl]-8-(2-oxo-1H-pyridin-3-yl)thieno[2,3-e]indole-7-carboxylic acid into molecular formula.
user
C23H14F2N2O3S
assistant