Using C=C(C)OC(C)=O, CCCCCC(CCC1CCCC1=O)OC(C)=O to produce CCCCCC(CCC1=C(OC(C)=O)CCC1)OC(C)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.