preferred_name: [alginate](n+1) + GDP + H(+) => [alginate](n) + GDP-alpha-D-mannuronate
preferred_name_lc: [alginate](n+1) + gdp + h(+) => [alginate](n) + gdp-alpha-d-mannuronate
label: [alginate](n+1) + GDP + H(+) => [alginate](n) + GDP-alpha-D-mannuronate
label_lc: [alginate](n+1) + gdp + h(+) => [alginate](n) + gdp-alpha-d-mannuronate