Using COc1ccccc1N1CCN(CCC(O)c2ccc3c(c2)CCC(=O)N3)CC1 to produce COc1ccccc1N1CCN(CC=Cc2ccc3c(c2)CCC(=O)N3)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.