Using Clc1cnccn1, O=Cc1ccc2ccc(-c3ccccc3)nc2c1 to produce OC(c1ccc2ccc(-c3ccccc3)nc2c1)c1nccnc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.