(1S,9R)-3-Hydroxy-12-(5-hydroxy-2,4-dimethoxy-3-methyl-benzyl)-4,6-dimethoxy-5-methyl-11,13-diaza-tricyclo[7.3.1.02,7]trideca-2,4,6-trien-10-one

(1R,9S)-3-Benzyloxy-12-[1-(5-benzyloxy-2,4-dimethoxy-3-methyl-phenyl)-meth-(Z)-ylidene]-4,6-dimethoxy-5-methyl-10-oxo-11,13-diaza-tricyclo[7.3.1.02,7]trideca-2,4,6-triene-13-carboxylic acid benzyl ester