What is the structure of the oligo in the barcoded beads?

GEXSCOPE v3.0.1 structure (single-cell/single-nucleus/VDJ/FocuSCOPE/PromoSCOPE/DynaSCOPE latest chemistry): BC1(9nt)-Linker1(16nt)-BC2(9nt)-Linker2(16nt)-BC3(9nt)-UMI(12nt)-PolyT(18nt). barcode (BC) and linker whitelists can be found at: https://github.com/singleron-RD/CeleScope/tree/c5cb2a954da01462a80e48b2432b28f53e422f34/celescope/data/chemistry/scopeV3.0.1

There you can also find the structure of the previous chemistry versions.

sCircle (transcriptome): BC1(8nt)-Linker1(16nt)-BC2(8nt)-Linker2(16nt)-BC3(8nt)-Linker(1nt)-UMI(12nt)-PolyT(18nt). The barcode (BC) and linker whitelists can be found at: https://github.com/singleron-RD/CeleScope/tree/master/celescope/data/chemistry/flv_rna/

sCircle (VDJ): UMI(9nt)-BC1(8nt)-Linker1(16nt)-BC2(8nt)-Linker2(16nt)-BC3(8nt). The barcode (BC) and linker whitelists can be found at: https://github.com/singleron-RD/CeleScope/tree/master/celescope/data/chemistry/flv/