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system
Please write the molecular formula of the molecule ethyl (2S)-2-[[[(2R,3S)-5-(2-amino-6-methoxypurin-9-yl)-3,4-dihydroxy-4-methyloxolan-2-yl]methoxy-[[(2S)-1-ethoxy-1-oxo-3-phenylpropan-2-yl]amino]phosphoryl]amino]-3-phenylpropanoate .
user
C34H44N7O10P
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