label: N,N',N'',N'''-tetraacetylchitotetraono-1,5-lactone + H2O <=> N,N',N'',N'''-tetraacetylchitotetraonate + H(+)
label_lc: n,n',n'',n'''-tetraacetylchitotetraono-1,5-lactone + h2o <=> n,n',n'',n'''-tetraacetylchitotetraonate + h(+)