Synthesis, crystal structure and Hirshfeld surface analysis of 3-(4,4-dimethyl-2,3,4,5-tetrahydro-1<i>H</i>-1,5-benzodiazepin-2-ylidene)-6-methyl-3,4-dihydro-2<i>H</i>-pyran-2,4-dione
Acta crystallographica. Section E, Crystallographic communications