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 [(4S)-3-[(E)-3-[5a-(3,4-dihydroxyphenyl)-1,3,11a-trihydroxy-12-oxochromeno[3,2-b][1,4]benzodioxin-9-yl]prop-2-enoyl]oxy-4-hydroxycyclohexyl] (E)-3-(3,4-dihydroxyphenyl)prop-2-enoate;formic acid ?
user
C40H34O18
assistant