Using O=C1Nc2cccnc2N(C(=O)Cl)c2ccccc21, NCCN1CCCC(CN2CCCCC2)C1 to produce O=C1Nc2cccnc2N(C(=O)NCCN2CCCC(CN3CCCCC3)C2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.