| C20H18O4 | F(000) = 1360 |
| Mr = 322.34 | Dx = 1.329 Mg m−3 |
| Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -C 2yc | Cell parameters from 4940 reflections |
| a = 35.908 (4) Å | θ = 2.3–30.6° |
| b = 6.8473 (6) Å | µ = 0.09 mm−1 |
| c = 13.2661 (11) Å | T = 100 K |
| β = 98.915 (4)° | Prism, colourless |
| V = 3222.3 (5) Å3 | 0.20 × 0.15 × 0.08 mm |
| Z = 8 |
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