You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[[[(5S,8aR,9R)-9-(4-hydroxy-3,5-dimethoxyphenyl)-8-oxo-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[6,5-f][1,3]benzodioxol-5-yl]amino]methyl]benzonitrile by IUPAC nomenclature, provide its molecular formula.
user
C29H26N2O7
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