Using CCC(Br)c1nc2onc(C)c2c(=O)n1Cc1ccccc1, NCCC(N)=O to produce CCC(NCCC(N)=O)c1nc2onc(C)c2c(=O)n1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.