20-N-Ethyl-1,8,14-tri­hydroxy-16β,18-di­methoxy­lycoctonine

The title compound, C₂₃H₄₇NO₅, has been isolated from Delphinium roylei for the first time. The molecular architechture comprises six fused rings, A–F. The six-membered rings, A and E, are in chair conformations, while ring D is in a distorted boat form. The seven-membered ring B is in a boat form and the remaining two five-membered rings, C and F, are in envelope conformations. The crystal structure is stabilized by O—H⋯O, C—H⋯O and C—H⋯N interactions.