Using O=C1CCC(=O)N1Br, CC1CSCC1CN1C(=O)c2ccccc2C1=O to produce O=C1c2ccccc2C(=O)N1Cc1cscc1CBr, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.