HPLC-DAD-MSn analyses were performed using an Agilent
1100 HPLC (Agilent, Waldbronn, Germany) equipped with a model
G1379A degasser, a model G1312A binary gradient pump, a model
G1313A thermo-autosampler, a model G1316A column oven, and a
model G1315B diode array detector.