Using CCCCCCCCCCCCCCCCCC(=O)c1c[nH]c2cc(C(=O)O)ccc12 to produce CCCCCCCCCCCCCCCCCCC1CNc2cc(C(=O)O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.