Using c1ccc([P+](CCC2OCCO2)(c2ccccc2)c2ccccc2)cc1, O=C1CN(C(=O)OCc2ccccc2)C1 to produce O=C(OCc1ccccc1)N1CC(=CCC2OCCO2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.