Using COCOc1ccc2c(c1)c(CO)c(C(C)C)n2Cc1ccccc1 to produce COCOc1ccc2c(c1)c(C=O)c(C(C)C)n2Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.