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system
(2S)-2-[[4-[(2-amino-4-oxo-3H-pteridin-6-yl)methylamino]benzoyl]amino]-8-[2-[2-[2-[2-[2-[5-[[1-[2-[2-[2-[2-[2-[2-[[2-[[[3-[[(1R,10S,11R,12R,19R)-12-ethyl-4-[(13S,15S,17R)-17-ethyl-17-hydroxy-13-methoxycarbonyl-11-azatetracyclo[13.3.1.04,12.05,10]nonadeca-4(12),5,7,9-tetraen-13-yl]-10,11-dihydroxy-5-methoxy-8-methyl-8,16-diazapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,13-tetraene-10-carbonyl]amino]propyl-dimethylsilyl]oxy-dimethylsilyl]methylsulfanyl]pyrimidin-5-yl]methoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethyl]triazol-4-yl]methoxymethyl]-6-[[1-[2-[2-[2-[2-[2-[2-[[2-[[[3-[[(1R,9R,10S,11R,12R,19R)-12-ethyl-4-[(13S,15S,17S)-17-ethyl-17-hydroxy-13-methoxycarbonyl-1,11-diazatetracyclo[13.3.1.04,12.05,10]nonadeca-4(12),5,7,9-tetraen-13-yl]-10,11-dihydroxy-5-methoxy-8-methyl-8,16-diazapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,13-tetraene-10-carbonyl]amino]propyl-dimethylsilyl]oxy-dimethylsilyl]methylsulfanyl]pyrimidin-5-yl]methoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethyl]triazol-4-yl]methoxy]-5-[[1-[2-[2-[2-[2-[2-[2-[[2-[[[3-[[(1R,9R,10S,11R,12R,19R)-12-ethyl-4-[(13S,15S,17S)-17-ethyl-17-hydroxy-13-methoxycarbonyl-1,11-diazatetracyclo[13.3.1.04,12.05,10]nonadeca-4(12),5,7,9-tetraen-13-yl]-10,11-dihydroxy-5-methoxy-8-methyl-8,16-diazapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,13-tetraene-10-carbonyl]amino]propyl-dimethylsilyl]oxy-dimethylsilyl]methylsulfanyl]pyrimidin-5-yl]methoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethyl]triazol-4-yl]methoxymethyl]-3-oxohexoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]-5-oxooctanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C254H372N36O57S3Si6
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