Using NCCCc1ccccc1, O=C(O)c1ccc(NC(=O)N2Cc3ccccc3C2)cc1 to produce O=C(NCCCc1ccccc1)c1ccc(NC(=O)N2Cc3ccccc3C2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.