Using COc1ccc(C2=Cc3ccc(OCc4ccccc4)cc3OC2)cc1, OC1CCOc2ccccc21 to produce O=c1c(-c2ccccc2)coc2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.