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ACETIC ACID 4,5-DI-ACO-6-MEO-2-(TOLUENE-4-SULFONYLOXYMETHYL)-4H-PYRAN-3-YL ESTER ACETIC ACID 4,5-DI-ACO-6-MEO-2-(TOLUENE-4-SULFONYLOXYMETHYL)-4H-PYRAN-3-YL ESTER