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 5-[(E)-[(2S,3S)-2-(3,5-dihydroxyphenyl)-5-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-6-methoxy-2,3-dihydroinden-1-ylidene]methyl]benzene-1,3-diol .
user
C30H26O8
assistant