Using O=C(CCl)Nc1cc(N2CCCc3ccccc3C2)nc2ccccc12, [N-]=[N+]=[N-] to produce [N-]=[N+]=NCC(=O)Nc1cc(N2CCCc3ccccc3C2)nc2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.