Showing structure for (1s,17s,18s,19s)-17-hydroxy-5,7-dioxa-12-azapentacyclo[10.6.1.0²,¹⁰.0⁴,⁸.0¹⁵,¹⁹]nonadeca-2,4(8),9,15-tetraen-18-yl (3s)-3-hydroxybutanoate