Using O=C1Nc2ccccc2Sc2ccccc21, CCOC(=O)CCCCCCBr to produce CCOC(=O)CCCCCCN1C(=O)c2ccccc2Sc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.