Using O=C1CCCN1, COc1ccc2c(Cc3c(Cl)cncc3Cl)nnc(Cl)c2c1 to produce COc1ccc2c(c1)C(N1CCCC1=O)NN=C2Cc1c(Cl)cncc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.