You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(2S)-2-carboxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)ethyl]-bis(2,5-dimethylphenyl)-sulfidophosphanium by IUPAC nomenclature, provide its molecular formula.
user
C34H34NO4PS
assistant