Using O=C(O)c1ccc2c(Cl)cc(Cl)c(O)c2n1, NCCc1c[nH]cn1 to produce O=C(NCCc1c[nH]cn1)c1ccc2c(Cl)cc(Cl)c(O)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.