3.04 (t, 2H, J = 6.44 Hz), 3.56 - 3.64 (m, 4H), 3.70 (t, 2H, J = 6.44 Hz ), 3.88 (m, 2H), 3.90 (s, 3H), 3.96 (s, 3H), 4.00 (m, 2), 6.36 ( m, 1H), 6.70 (m, 2H), 6.36 (m, 1H), 6.70 (broad, 4H), 6.70 (m, 1H), 7.20 (m, 1H), 7.70 (m, 1H), 7.76 (m, 1H) ppm