2-Imidazolidinone,1,1'-[(2R,3R)-2-(1,3-benzodioxol-5-ylcarbonyl)-3-(3,4-dimethoxybenzoyl)-1,4-dioxo-1,4-butanediyl]bis[3,4-dimethyl-5-phenyl-, (4R,4'R,5S,5'S)-
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