(2R,4aR,8aR,9aS,10aS)-10a-Methyl-2-phenyl-octahydro-1,3,8,10-tetraoxa-anthracen-7-one

(R)-2-Methyl-3-((2R,4aR,8aR,9aS,10aS)-10a-methyl-2-phenyl-4a,5,8a,9,9a,10a-hexahydro-4H-1,3,8,10-tetraoxa-anthracen-7-yl)-propionic acid methyl ester