6aH-Cyclohepta(a)naphthalene-6a,9-dicarboxaldehyde, 1,2,3,4,4a,5,6,7,8,11,11a,11b-dodecahydro-7-hydroxy-4,4,11b-trimethyl-, (4aS,6aS,7S,11aR,11bS)-