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 [(2R,3S,4S,5R,6S)-6-[[5,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-2H-chromen-3-yl]oxy]-3,4,5-trihydroxyoxan-2-yl]methyl (E)-3-(3,4-dihydroxyphenyl)prop-2-enoate .
user
C30H28O15
assistant