Galeon

4-Hydroxy-17-methoxy-2-oxatricyclo[13.2.2.13,7]icosa-3,5,7(20),15,17(1),18-hexen-10-one

4-Hydroxy-17-methoxy-2-oxatricyclo[13.2.2.13,7]icosa-1(17),3,5,7(20),15,18-hexene-10-one