You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [9-[2-(diethylsulfamoyl)phenyl]-6-[ethyl(phenylsulfanylmethyl)amino]xanthen-3-ylidene]-ethyl-(phenylsulfanylmethyl)azanium .
user
C41H44N3O3S3+
assistant