Using CCCCC(=O)c1ccc2c(c1)Cc1cc(C(=O)CCCC)ccc1-2 to produce CCCCCc1ccc2c(c1)Cc1cc(CCCCC)ccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.