Using COC(=O)c1ccc2c(Cc3ccc(Cl)cc3Cl)c(C)[nH]c2c1 to produce Cc1[nH]c2cc(C(=O)O)ccc2c1Cc1ccc(Cl)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.