butoxy,dihydro,pyran,carboxylic,butyl,ester,2h-pyran,2h-pyran-2-carboxylic,dihydro-2h-pyran
2H-pyran
110549-63-8(2E,7S)-4,7-anhydro-1,2,3-trideoxy-2-[(1E,3E,5E)-6-(4-methoxy-5-methyl-2-oxo-2H-pyran-6-yl)hexa-1,3,5-trien-1-yl]-4,7-dimethyl-6-C-methyl-D-xylo-hept-2-enitol