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 [6-hydroxy-2-(4-hydroxyphenyl)-1-benzothiophen-3-yl]-[4-[4-(2-piperidin-1-ylethoxy)phenyl]phenyl]methanone .
user
C34H31NO4S
assistant