[(1S,8R,8aS)-8-(2-Methoxy-ethoxymethoxy)-2-oxo-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-acetic acid methyl ester

(1R,3S,6R,7S,8R)-10-Bromo-1-methoxy-2-oxa-tricyclo[5.3.1.03,8]undecan-6-ol