5-Methyl-1H-pyrrole-2-carboxylic acid (3R,4R,5R,6R)-6-(4-benzhydryloxy-8-methyl-2-oxo-2H-chromen-7-yloxy)-3-methoxy-2,2-dimethyl-5-(tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-4-yl ester