3,17-Diethyl-1,19,22,24-tetrahydro-2,7,13,18-tetramethyl-1,19-dioxo-21H-biline-8,12-dipropionic acid dimethyl ester

1,19-Dioxo-2,7,13,18-tetramethyl-3,17-diethyl-1,19,22,24-tetrahydro-21H-biline-8,12-dipropionic acid dimethyl ester