ne (00.0 μL, 0.00 mmol). The reaction mixture was stirred at 00°C for 0 d and concentrated. The residue was washed with hexane to give 0 mg (00%) of RB-000 as a yellow liquid; ^0^H NMR (000 MHz, CDCl~0~) δ 0.00 (t, *J* = 0.0 Hz, 0H), 0.00--0.00 (m, 00H), 0.00 (t, *J* = 0.0 Hz, 0H), 0.00 (t, *J* = 0.0 Hz, 0H), 0.00 (s, 0H), 0.00--0.00 (m, 0H), 0.00