Using CCCCCCBr, COc1cc(O)ccc1C(=O)CSc1ccnc2ccccc12 to produce CCCCCCOc1ccc(C(=O)CSc2ccnc3ccccc23)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.