57458-50-1 5H-CYCLOHEPTA(b)NAPHTHALEN-6,9-IMIN-5-OL, 5a,6,7,8,9,10,10a,11-OCTAHYDRO-12-METH 5H-Cyclohepta(b)naphthalen-6,9-imin-5-ol, 5a,6,7,8,9,10,10a,11-octahydro-12-methyl-, (5R-(5-alpha,5a-alpha,6-alpha,9-alpha,10a-alpha))-