Using CCCC(CCC)n1c(Br)cc(=O)c2c(-c3ccc(C)cc3C)cccc21, CB(O)O to produce CCCC(CCC)n1cc(C)c(=O)c2c(-c3ccc(C)cc3C)cccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.