You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2S,4R,5R,8R,9S)-2-[[(5aR,6R,8R,9aS)-3,3,6-trimethyl-6,8,9,9a-tetrahydro-5aH-pyrano[3,4-f][1,2,4,5]tetraoxepin-8-yl]oxymethyl]-9-formyl-5-methyl-13-propan-2-yltetracyclo[7.4.0.02,11.04,8]tridec-12-ene-1-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H42O9
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