Using O=c1ccn(CCC(CO)CBr)c(=O)[nH]1, [N-]=[N+]=[N-] to produce [N-]=[N+]=NCC(CO)CCn1ccc(=O)[nH]c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.