You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3S,4R,5S,6R,7R,11R,16R,17S,18S,19R,20S)-23-(3,4-dihydroxyphenyl)-4,5,6,11,17,18,19,27-octahydroxy-2,9,14,21,24,31,32-heptaoxapentacyclo[20.6.2.13,7.116,20.025,29]dotriaconta-1(28),22(30),25(29),26-tetraene-10,13-dione into its molecular formula.
user
C31H34O19
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