The authors apologise for an error in the previous Corrigendum to their original paper; the text:
Under the sub-heading ‘Liquid chromatography-mass spectrometry (LC-MS)’ the sentence:
“The peaks at 512 and 696 mz−1 in the figure represent 5 and 7 repeating units” must be replaced by “The peaks at 512 and 696 mz−1 in the figure represent 5 and 7 repeating units”.
should read:
Under the sub-heading ‘Liquid chromatography-mass spectrometry (LC-MS)’ the sentence: “The peaks at 569 and 652 mz−1 in the figure represent 8 and 9 repeating units” must be replaced by “The peaks at 512 and 696 mz−1 in the figure represent 5 and 7 repeating units”.
There were some errors in Figure 3, so please find below Figure 3 and associated text: