Using COC1N=C(c2ccccc2Cl)c2cc(Cl)ccc2N=C1Cl, C1CCOC1 to produce CCOC1=Nc2ccc(Cl)cc2C(c2ccccc2Cl)=NC1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.