Using CC(=O)CCCCBr, CCCCn1c(=O)c2[nH]cnc2n(CCCC)c1=O to produce CCCCn1c(=O)c2c(ncn2CCCCC(C)=O)n(CCCC)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.