Showing structure for (11r)-11-(2-carbamimidamidoethyl)-8-hydroxy-13-oxo-12,15-dioxa-4-azatetracyclo[7.6.1.0⁵,¹⁶.0¹⁰,¹⁴]hexadeca-1(16),2,4,6,8,10(14)-hexaene-3-carboxylic acid