Using O=C(OO)c1ccccc1, CC(C)(C)OC(=O)Oc1ccccc1C(=O)O to produce CC(C)(C)OC(=O)Oc1ccccc1C(=O)OOC(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.