(1S,3R,6R,8R,9R,11R,14S,15S,19R,20R)-8-ethyl-9,15-dihydroxy-3,4,6,20-tetramethyl-21,23-dioxo-24-azapentacyclo[20.2.1.0(1,6).0(11,20).0(14,19)]pentacosa-4,12,22(25)-trien-25-olate
(1s,3r,6r,8r,9r,11r,14s,15s,19r,20r)-8-ethyl-9,15-dihydroxy-3,4,6,20-tetramethyl-21,23-dioxo-24-azapentacyclo[20.2.1.0(1,6).0(11,20).0(14,19)]pentacosa-4,12,22(25)-trien-25-olate