Using c1ccc([P+](CC2CCOCC2)(c2ccccc2)c2ccccc2)cc1, CCOC(=O)C(=O)c1ccc(SC2CC2)c(Br)c1 to produce CCOC(=O)C(=CC1CCOCC1)c1ccc(SC2CC2)c(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.