Using O=C1OC(=O)c2ccccc21, CC1(C)c2ccccc2-c2ccccc21 to produce CC1(C)c2ccccc2-c2ccc(C(=O)c3ccccc3C(=O)O)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.