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Can you give the molecular formula of the molecule 2-[2-[(1S,2S,3R,4R,6R,7S,8S,10R,14S,16S,20R,22R,23S,25R,26R)-3,4,16,22,23-pentahydroxy-3,6,7,25-tetramethyl-8-(3-methylbutyl)-19-oxo-18-(2-oxopropylamino)-10-[(3R,4R)-5-oxo-4-(1H-pyrrol-3-yl)oxolan-3-yl]-1-pentacyclo[14.12.0.02,14.017,26.020,25]octacos-17-en-11-ynyl]ethyl]guanidine ?
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C51H77N5O9
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