(17R)-19,20-Didehydro-17-18-epoxycuran-17-ol 1-Deacetyldiaboline 466-85-3 Caracurine Caracurine VII Curan-17-ol, 19,20-didehydro-17-18-epoxy-, (17R)- (9CI) Deacetyldiaboline Desacetyldiaboline Diaboline, 1-deacetyl- WGA Wieland-gumlich aldehyde