Using O=C(Nc1nc2ccc(Br)cn2n1)c1ccccc1, CN(C)C=O to produce CN(C)CCNC(=O)c1ccc(-c2ccc3nc(NC(=O)c4ccccc4)nn3c2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.