Using COc1ccc(C(=O)COc2ccc3oc(C(=O)c4ccc(OC)cc4)c(C)c3c2)cc1 to produce COc1ccc(Cc2oc3ccc(O)cc3c2C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.