You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (Z)-4-(4-hydroxy-2,6-dimethoxyphenyl)-1-[(Z)-2-(4-hydroxy-2,6-dimethoxyphenyl)ethenyl]sulfonylbut-3-en-2-one using the IUPAC nomenclature.
user
C22H24O9S
assistant