Using COC(=O)c1cc(OC)nc(N2CCC(NC(=O)c3[nH]c(C)c(Cl)c3Cl)CC2)n1 to produce COc1cc(C(=O)O)nc(N2CCC(NC(=O)c3[nH]c(C)c(Cl)c3Cl)CC2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.