Using O=C1CCCN1C(=O)NCCN1CCC(O)(c2ccc(Cl)cc2)CC1 to produce O=C1CCCN1C(=O)NCCN1CC=C(c2ccc(Cl)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.