Crystal structure of 3-{1-[(1-allyl-1H-indazol-6-yl)amino]­ethyl­idene}-6-methyl-2H-pyran-2,4(3H)-dione

In the title compound, C(18)H(17)N(3)O(3), the dihedral angle between the planes of the indazole ring system [maximum deviation = 0.012 (1) Å] and the pyran-2,4-dione ring is 54.03 (6)°. An intra­molecular N—H⋯O hydrogen bond closes an S(6) ring. The same H atom also participates in an inter­molecular N—H⋯O hydrogen bond, which generates an inversion dimer. The dimers are linked by weak C—H⋯O contacts, thereby forming a three-dimensional network.