C[C@@]12CCC[C@@](C)(C=O)[C@H]1CC[C@@]13CC(=O)[C@@](CO)(CC=C12)C3	(1R,4S,5R,9R,13S)-13-(hydroxymethyl)-5,9-dimethyl-14-oxotetracyclo[11.2.1.01,10.04,9]hexadec-10-ene-5-carbaldehyde