preferred_name: [(1->4)-N-acetyl-beta-D-glucosaminyl](n) + n H2O => chitosan + n acetate
preferred_name_lc: [(1->4)-n-acetyl-beta-d-glucosaminyl](n) + n h2o => chitosan + n acetate
label: [(1->4)-N-acetyl-beta-D-glucosaminyl](n) + n H2O => chitosan + n acetate
label_lc: [(1->4)-n-acetyl-beta-d-glucosaminyl](n) + n h2o => chitosan + n acetate