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What is the molecular formula of the molecule 1-[(1'S,2'R,3'S,4'S,5'R,6'S,7'S,8'R)-1'-bromospiro[1,3-dioxolane-2,9'-pentacyclo[4.3.0.02,4.03,8.05,7]nonane]-4'-yl]-3-[(1'S,2'R,3'R,4'R,5'R,6'R,7'S,8'S)-1'-bromospiro[1,3-dioxolane-2,9'-pentacyclo[4.3.0.02,4.03,8.05,7]nonane]-4'-yl]urea ?
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C23H22Br2N2O5
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