Using COC(=O)c1ccc(OC)c2[nH]c(-c3ccc(Cl)cc3)nc12 to produce O=C(O)c1ccc(O)c2[nH]c(-c3ccc(Cl)cc3)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.