Using COc1ccc(C(=O)c2oc3c(O)c(C)c(C)cc3c2C)cc1 to produce COc1ccc(Cc2oc3c(O)c(C)c(C)cc3c2C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.