You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name [1-[(2S,3R,4S,5R,6R)-2-[2-(3,4-dihydroxy-5-methoxyphenyl)-5-hydroxy-7-oxochromen-3-yl]oxy-3,5-dihydroxy-6-[[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxymethyl]oxan-4-yl]oxy-3-(4-hydroxyphenyl)prop-2-enylidene]oxidanium ?
user
C37H39O18+
assistant