Using CCCCCCCCCCCP(=O)(c1ccccc1)c1ccccc1, O=C1CCCCO1 to produce CCCCCCCCCCC(C(=O)CCCCO)P(=O)(c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.