“…1 H NMR (400 MHz, CDCl 3 ): = 7.44 2 H,11,15),3 H,12,13,14),1 H,5),3.43 (s,2 H,2),3.36 (d,J = 7.8 Hz,2 H,6), 1.77 (s, 3 H, 8), 1.74 (s, 3 H, 9). 13 C NMR (101 MHz, CDCl 3 ): = 136.44 (CH 2 , 8), 131.69 (2 × CH,12,16),128.25 (2 × CH,13,15),128.07 (C,14),123.24 (C,11),119.80 (CH,6),86.03 (C,3),82.66 (C,4),29.16 (CH 2 ,6),25.78 (CH 3 ,9),19.27 (CH 2 ,2), 17.84 (CH 3 , 10).…”