Using COc1ccc2c(c1)Oc1c(OCc3ccccc3)cccc1C21CCN(C)CC1 to produce COc1ccc2c(c1)Oc1c(O)cccc1C21CCN(C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.