Using COCCCO, Clc1nc(Cl)c2c(n1)CCN(Cc1ccccc1)C2 to produce COCCCOc1nc(Cl)nc2c1CN(Cc1ccccc1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.