In the title compound, C20H17N3O4S, all non-H atoms, except those of the phenyl ring, are approximately coplanar [maximum deviation = 0. K 0.19 0.11 0.05 mm Data collection ? Bruker SMART APEX CCD diffractometer Absorption correction: multi-scan (= 1.06 4582 reflections 259 parameters H atoms treated by a mixture of independent and constrained refinement max… Continue reading In the title compound, C20H17N3O4S, all non-H atoms, except those of