Using O=C(n1ccnc1)n1ccnc1, CN1Cc2c(C(=O)O)ncn2-c2cccc(Br)c2C1=O to produce CN1Cc2c(C(N)=O)ncn2-c2cccc(Br)c2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.