label: N(1)-(3,4-dihydroxybenzoyl)-N(8),N'(8)-citryl-bis(spermidine) + 3,4-dihydroxybenzoyl-[aryl-carrier protein] <=> petrobactin + holo-[aryl-carrier protein] + H(+)
label_lc: n(1)-(3,4-dihydroxybenzoyl)-n(8),n'(8)-citryl-bis(spermidine) + 3,4-dihydroxybenzoyl-[aryl-carrier protein] <=> petrobactin + holo-[aryl-carrier protein] + h(+)