Using O=C1NCCn2c1nnc2-c1cnccn1, Clc1cccc(CBr)c1Cl to produce O=C1c2nnc(-c3cnccn3)n2CCN1Cc1cccc(Cl)c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.