Using C1COCCO1, COC(=O)CCC1(C)CCc2cc(O)c3c(c2O1)C1CCC3C1 to produce CC1(CCC(=O)O)CCc2cc(O)c3c(c2O1)C1CCCC3CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.