– C(five), H2-C(5), H1-C(2), H2-C(two)); three.79 (s, 6H, H
– C(five), H2-C(five), H1-C(2), H2-C(2)); three.79 (s, 6H, H3CO); 3.93-4.05 (m, 4H, H-C(2), H-C(4), H1-C(one), H2-C(one)), four.42 (m, 1H, H-C(three)); five.33 (d, J =8.1 Hz, 1H, H-C(five)); five.86 (s, 1H,…