| C20H18O4 | F(000) = 680 |
| Mr = 322.34 | Dx = 1.284 Mg m−3 |
| Monoclinic, P21/c | Melting point = 406–408 K |
| Hall symbol: -P 2ybc | Cu Kα radiation, λ = 1.54184 Å |
| a = 18.684 (2) Å | Cell parameters from 1499 reflections |
| b = 6.5431 (5) Å | θ = 4.7–63.4° |
| c = 13.6688 (14) Å | µ = 0.73 mm−1 |
| β = 93.627 (11)° | T = 298 K |
| V = 1667.7 (3) Å3 | Prism, colorless |
| Z = 4 | 0.40 × 0.12 × 0.04 mm |
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