Using CCCCC(CC)Cn1c2ccccc2c2ccccc21, O=C(Cl)c1ccccc1 to produce CCCCC(CC)Cn1c2ccccc2c2cc(C(=O)c3ccccc3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.