Using O=C1CCC(=O)N1Br, Cc1nn(C)c2[nH]c(=O)c3c(c12)CCCC3 to produce Cc1nn(C)c2[nH]c(=O)c3c(c12)C(Br)CCC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.