| C19H18O7 | Z = 2 |
| Mr = 358.33 | F(000) = 376 |
| Triclinic, P1 | Dx = 1.396 Mg m−3 |
| a = 5.0789 (4) Å | Cu Kα radiation, λ = 1.54184 Å |
| b = 8.0801 (6) Å | Cell parameters from 1498 reflections |
| c = 20.8682 (19) Å | θ = 5.5–75.0° |
| α = 92.481 (7)° | µ = 0.90 mm−1 |
| β = 91.984 (7)° | T = 293 K |
| γ = 94.253 (6)° | Prism, yellow |
| V = 852.62 (12) Å3 | 0.03 × 0.02 × 0.01 mm |