D-maltopentaono-1,5-lactone + H2O <=> D-maltopentaonate + H(+)
d-maltopentaono-1,5-lactone + h2o <=> d-maltopentaonate + h(+)
D-maltopentaono-1,5-lactone + H2O <=> D-maltopentaonate + H(+)
d-maltopentaono-1,5-lactone + h2o <=> d-maltopentaonate + h(+)