Using NCc1ccc(Cl)cc1, O=C(O)c1c[nH]c(-c2n[nH]c3ncccc23)c1 to produce O=C(NCc1ccc(Cl)cc1)c1c[nH]c(-c2n[nH]c3ncccc23)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.