Using COC(=O)c1cc2c([nH]1)CCC2CC(C)(C)c1ccccc1 to produce CC(C)(CC1CCc2[nH]c(C(=O)O)cc21)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.