3.22-(Epoxyethanoxy)-6.9:25.28-dietheno-7.36:17.26-dimethano-14.18:33.37-dimetheno-18H.37H-dibenzo[j.a1][1.4.18.21]tetraoxacyclotetratriacontin-2-ol. 5.11.12.19.24.30.31.38-octahydro-15.21.34.41.49-pentamethoxy-. stereoisomer