Using COC(=O)c1ccc2c(c1)nc(Nc1c(Cl)cncc1Cl)n2C to produce Cn1c(Nc2c(Cl)cncc2Cl)nc2cc(C(=O)O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.