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system
What is the molecular formula of the molecule 3-[[2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-[2,6-bis[2-(4-nitrophenyl)ethoxy]purin-9-yl]oxolan-3-yl]oxy-[di(propan-2-yl)amino]phosphanyl]oxypropanenitrile ?
user
C56H61N8O12P
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