3.23-(Epoxypropanoxy)-6.9:26.29-dietheno-7.38:18.27-dimethano-15.19:35.39-dimetheno-11H.19H.31H.39H-dibenzo[k.c1][1.5.19.23]tetraoxacyclohexatriacontin. 5.12.13.20.25.32.33.40-octahydro-2.16.22.36.43.52-hexamethoxy-. radical ion(1+). stereoisomer (9CI)