You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (6S)-6-tert-butyl-N-(4-chlorophenyl)-2-[(4-hydroxy-3,5-dimethoxyphenyl)methylideneamino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide into molecular formula.
user
C28H31ClN2O4S
assistant