Showing structure for (9r,10r,11s,14s,15r)-10-ethyl-14-methyl-3-[(2s,4s)-4-methyl-5-oxooxolan-2-yl]-12-oxa-4-azatetracyclo[7.6.1.0⁴,¹⁶.0¹¹,¹⁵]hexadeca-1(16),2-dien-13-one