3-Acetyl-4-hydroxy-7-[(2R,3R,4R,5R)-4-hydroxy-5-methoxy-6,6-dimethyl-3-(tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-yloxy]-8-methyl-chromen-2-one

3-Acetyl-4-hydroxy-7-[(2R,3R,4R,5R)-5-methoxy-6,6-dimethyl-3-(tetrahydro-pyran-2-yloxy)-4-triethylsilanyloxy-tetrahydro-pyran-2-yloxy]-8-methyl-chromen-2-one