(3aS-(3aalpha,4beta,9alpha,9abeta))-4-((1,3,3a,4,9,9a-hexahydro-9-(4-hydroxy-3,5-dimethoxyphenyl)-6,7-dimethoxy-1-oxonaphtho(2,3-c)furan-4-yl)amino)benzoic acid, ethyl ester 138355-95-0