D-maltoheptaose + H2O => D-maltohexaose + alpha-D-glucose
d-maltoheptaose + h2o => d-maltohexaose + alpha-d-glucose
D-maltoheptaose + H2O => D-maltohexaose + alpha-D-glucose
d-maltoheptaose + h2o => d-maltohexaose + alpha-d-glucose