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system
Please write the molecular formula of the molecule 5-amino-3-[(1R,6R,9S,10R,15S,17R)-9-[(5,6-diaminopyrimidin-4-yl)-(methylamino)amino]-9-fluoro-12-hydroxy-3-oxo-3-sulfanyl-12-sulfanylidene-2,4,7,11,13-pentaoxa-16-thia-3lambda5,12lambda5-diphosphatricyclo[13.2.1.06,10]octadecan-17-yl]-6H-triazolo[4,5-d]pyrimidin-7-one .
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C19H27FN12O8P2S3
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