label: [(1->4)-alpha-D-glucosyl](n+2) + phosphate => alpha-maltose 1-phosphate + [(1->4)-alpha-D-glucosyl](n)
label_lc: [(1->4)-alpha-d-glucosyl](n+2) + phosphate => alpha-maltose 1-phosphate + [(1->4)-alpha-d-glucosyl](n)