Abstract C 15 H 14 N 2 O 4, triclinic, P 1 ̅ P1 (no. 2), a = 7. 0804 (4) Å, b = 7. 4383 (4) Å, c = 12. 7301 (4) Å, α = 77. 649 (3) °, β = 84. 277 (3) °, γ = 83. 313 (4) °, V = 648. 54 (6) Å 3, Z = 2, R gt (F) = 0. 0367, wR ref (F 2) = 0. 0999, T = 100 K.
Sun et al. (Fri,) studied this question.