Using CCOC(=O)CO, CC1(C)CCCC2(C1)CC2(C)C(=O)O to produce CCOC(=O)COC(=O)C1(C)CC12CCCC(C)(C)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.