Using O=C1c2ccccc2C(=O)N1CCBr, Cc1c(N)c(=O)n(C)c(=O)n1C to produce Cc1c(NCCN2C(=O)c3ccccc3C2=O)c(=O)n(C)c(=O)n1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.