Using C#Cc1cccc2c1CCN1C(=O)CN=C(c3cccc(OC)c3)C=C21 to produce CCc1cccc2c1CCN1C(=O)CN=C(c3cccc(OC)c3)C=C21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.