Using O=CC(=O)O, CCC(C)(C)c1cccc(C(C)(C)CC)c1O to produce CCC(C)(C)c1cc2c(c(C(C)(C)CC)c1)OC(=O)C2O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.