Using O=C1CCOCC1, COc1cc(C)c(C=O)cc1C to produce COc1cc(C)c(C=C2COCC(=Cc3cc(C)c(OC)cc3C)C2=O)cc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.