You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2S,4R,6S,10S,12E,15S)-19-hydroxy-21-methoxy-8,8,15-trimethyl-3,7,9,16-tetraoxatetracyclo[16.4.0.02,4.06,10]docosa-1(18),12,19,21-tetraene-11,17-dione into its molecular formula.
user
C22H26O8
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