(3aR,6S,7aR)-7a-Chloro-6-methyl-2-(4-nitrophenylsulfonyl)-1,2,3,6,7,7a-hexahydro-3a,6-epoxyisoindole

In the title compound, C15H15ClN2O5S, the tetrahydrofuran ring adopts an envelope conformation with the O atom as the flap. The pyrrolidine ring adopts an envelope conformation with the chlorine-substituted C atom as the flap. In the crystal, two types of C—H...O hydrogen bonds generate R22(20) and R44(26) rings, with adjacent rings running parallel to ac plane. Further C—H...O hydrogen bonds form a C(6) chain, linking the molecules in the b-axis direction