Showing structure for (1s,4as,5'r,8as)-5'-(2-methoxy-2-oxoethyl)-5,5,5',8a-tetramethyl-4a,6,7,8-tetrahydro-4h-spiro[naphthalene-1,2'-oxolan]-2-ylmethyl 2-[(1s,4ar,5'r,8ar)-2,5,5,5',8a-pentamethyl-4a,6,7,8-tetrahydro-4h-spiro[naphthalene-1,2'-oxolan]-5'-yl]acetate