The molecular weight of compound 2 was 42 mass units more than that of 1 as revealed by HRESIMS ion peak at m/z 613.2859 ([M + Na]+, cacld for 2 and 1 revealed a high level of sfoimr Cila34rHity42wNi2tOh7tNhea,o6n1l3y.2si8g9n0i)fi.cCanotmdpifafreirseonncoefotf...