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Can you tell me the SMILES representation for the molecule 9-[(4aR,6R,7R,7aR)-2-hydroxy-7-methoxy-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-6-yl]-8-methylsulfanylpurin-6-amine ?
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