You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by sodium;3-[2,6-dichloro-7-fluoro-1-(2-spiro[2H-indole-3,1'-cyclopropane]-1-ylethyl)indol-3-yl]sulfanyl-2-fluorobenzoate ?
user
C27H19Cl2F2N2NaO2S
assistant