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 3-hydroxy-N-[3-hydroxy-2-methoxy-6-[(Z)-2-(3,4,5-trimethoxyphenyl)ethenyl]phenyl]-4-methoxybenzenesulfonamide using the IUPAC nomenclature.
user
C25H27NO9S
assistant