Using CCCN(CCC)CCCN, O=C(O)c1ccc(CN(Cc2ncc[nH]2)Cc2ncc[nH]2)cc1 to produce CCCN(CCC)CCCNC(=O)c1ccc(CN(Cc2ncc[nH]2)Cc2ncc[nH]2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.