Cannabicyclol (CBL)

Molecular Formula: C₂₁H₃₀O₂
Image credit: PubChem

CBL is said to be an artifact of CBC.

Photochemical conversion of CBC into CBL was demonstrated in 1968. Hashish components. Photochemical production of cannabicyclol from cannabichromene
L. Crombie, R. Ponsford
Department of Chemistry, University College, (University of Wales), Cathays Park, Cardiff. Australia
A. Shani, B. Yagnitinsky, R. Mechoulam
Laboratory of Natural Products, School of Pharmacy, Hebrew University, Jerusalem, Israel.
doi:10.1016/S0040-4039(00)76346-5

Cannabicyclol is also known as Cannabipinol.

Further reading

ChemIDplus: Cannabicyclol
ACToR: Cannabicyclol
Wikipedia: Cannabicyclol