Fig.4.
(A) Extracted ion chromatogram of F(6)A2G[6]1, more commonly known as G1 and F(6)A2G[3]1, more commonly known as G1’. (B) Annotated ESI negative ion CID MS/MS spectrum for F(6)A2G[6]1 at the retention time of 19.6 min. (C) Negative ion CID-MS/MS spectra of F(6)A2G[3]1S(6)1 at the retention time of 20.7 min , indicating diagnostic fragments for comprehensive structural annotation. Monosaccharide symbols as described in Fig. 2. Further experimental details in Fig. 2.