Using O=C(NC1CCC1)c1ccc2cnccc2n1, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)CN1CCc2nc(C(=O)NC3CCC3)ccc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.