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 (3aS,6aR)-3-(3-chlorophenyl)-2-(2-phenoxyethylsulfanyl)-3a,4,6,6a-tetrahydrothieno[3,4-d]imidazole 5,5-dioxide .
user
C19H19ClN2O3S2
assistant