Using COC(=O)c1c(C2CC2)nc2cc(Cl)c(Cl)cc2c1-c1ccccc1 to produce O=C(O)c1c(C2CC2)nc2cc(Cl)c(Cl)cc2c1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.