4-[4-Ethoxycarbonyl-5-(3,4-methylenedioxyphenyl)-3-oxocyclohex-1-en-1-yl]-3-phenylsydnone

In the title compound {systematic name: 4-[4-ethoxycarbonyl-5-(3,4-methylenedioxyphenyl)-3-oxocyclohex-1-en-1-yl]-3-phenyl-1,2,3-oxadiazol-3-ium-5-olate}, C24H20N2O7, the cyclohexene and dioxole rings adopt envelope conformations. The sydnone ring and the attached phenyl ring form a dihedral angle of 79.0 (1)°. In the molecular structure, a C—H⋯O hydrogen bond generates an S(6) ring and a C—H⋯π interaction involving the phenyl ring is observed. In the crystal structure, molecules are linked into a ribbon-like structure along the a axis by C—H⋯O hydrogen bonds.