Using COc1ccc(C=O)cc1, NCCNC(=O)C1CCN(c2c(Cl)cncc2Cl)CC1 to produce COc1ccc(CNCCNC(=O)C2CCN(c3c(Cl)cncc3Cl)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.