Using CC(=O)O[BH-](OC(C)=O)OC(C)=O, O=C(Nc1ccc(Cl)c(-c2ccccn2)c1)c1ccc(CN2CCNCC2=O)cc1 to produce CN1CCN(Cc2ccc(C(=O)Nc3ccc(Cl)c(-c4ccccn4)c3)cc2)C(=O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.