Using O=Cc1cnc2occc2c1, CNC(=O)C[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce CNC(=O)C=Cc1cnc2occc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.