he solid precipitate was filtered off, washed with water, and recrystallized from ethanol-water mixture (0:0), yield 0.00 g (00%), m.p. 000--000 °C. IR (ν, cm^−0^): 0000 (CH aliph.). ^0^H-NMR (000 MHz, CDCl~0~) δ (ppm): 0.00 (s, 0H, CH~0~), 0.00 (s, 0H, CH~0~), 0.00 (d, 0H, CH~0~), 0.00 (d, 0H, CH~0~), 0.00--0.00 (