You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(E)-[(4E)-4-[(1,3-dimethyl-1,3,2-diazaborolidin-2-yl)methylidene]oxolan-3-ylidene]methyl]-trimethylstannane is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H25BN2OSn
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