Using O=C1CCOCC1, COc1ccc(C=O)c(C)c1C to produce COc1ccc(C=C2COCC(=Cc3ccc(OC)c(C)c3C)C2=O)c(C)c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.