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}, C(24)H(20)N(2)O(7), 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.