C[C@H]1CCC=C2CC[C@]3(O)OO[C@](C)(C=O)[C@@H]3[C@@]21C	(1S,2S,3S,6S,13S)-6-hydroxy-1,3,13-trimethyl-4,5-dioxatricyclo[7.4.0.0^{2,6}]tridec-9-ene-3-carbaldehyde