Crystal structure of 3,4-dimethyl 2-(tert-butyl­amino)-5-[2-oxo-4-(thio­morpholin-4-yl)-2H-chromen-3-yl]furan-3,4-di­carboxyl­ate ethyl acetate hemisolvate

In the title hemisolvate, C(25)H(28)N(2)O(7)S·0.5C(4)H(8)O(2), the thio­morpholine ring adopts a chair conformation, with the exocyclic N—C bond in an equatorial orientation. The dihedral angle between the coumarin ring system (r.m.s. deviation = 0.044 Å) and the furan ring is 64.84 (6)°. An intra­molecular N—H⋯O hydrogen bond closes an S(6) ring. The ethyl acetate solvent mol­ecule is disordered about a crystallographic inversion centre. In the crystal, the components are linked by C—H⋯O and C—H⋯S hydrogen bonds, generating a three-dimensional network.