Using COC(=O)CCCCCCCCC(=O)c1c(C)cc(OC)c(OC)c1O to produce COC(=O)CCCCCCCCCc1c(C)cc(OC)c(OC)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.