C[C@@]12CCC[C@@](C)(C=O)[C@H]1CC[C@]13C[C@@]4(O)CO[C@@]4(CC=C12)C3	(1S,5R,9R,10S,13R,15R)-15-hydroxy-5,9-dimethyl-17-oxapentacyclo[11.4.1.01,15.04,13.05,10]octadec-3-ene-9-carbaldehyde