Using COC(=O)c1ccc2oc(C)c(Cc3ccc(-c4ccccc4)cc3)c2c1 to produce Cc1oc2ccc(C(=O)O)cc2c1Cc1ccc(-c2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.