Using O=C1CCC(=O)N1Br, COC(=O)c1cccc(-n2c(=O)c(C)nc3cccnc32)c1 to produce COC(=O)c1cccc(-n2c(=O)c(CBr)nc3cccnc32)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.