Section (δH 5.6 to 1.5; δC 80 to 10) of the 1H,13C-HSQC NMR spectrum (700 MHz) obtained from mesorhizobial OL-OH (acidic isolation procedure) including assignment of signals. Four different sets of signals were obtained due to the mixed presence of d- and l-ornithine as well as two different acylation species (2-O-acyl,3-OH and 2-OH,3-O-acyl) combined with each ornithine configuration. Orn, ornithine; FA, fatty acid.