You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[6-[[2-(benzoyloxymethyl)-6-hydroxy-8-methyl-9,10-dioxatetracyclo[4.3.1.02,5.03,8]decan-3-yl]oxy]-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl] 3,4,5-trihydroxybenzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H32O15
assistant