Table 1. Quantitative Constraints on Relative Peak Intensity at m/z 371.

theoretical m/z	molecular formula	relative intensity (%)	S/N
371.0409	[C18H12O9–H]−	23 ± 8	≥120
371.0620	[C15H16O11–H]−	85 ± 10	≥400
371.0984	[C16H20O10–H]−	100	≥550
371.1348	[C17H24O9–H]−	54 ± 10	≥200