Using O=C1c2ccccc2C(=O)N1CCCCCCCCCC(c1ccccn1)N1C(=O)c2ccccc2C1=O to produce NCCCCCCCCCC(N)c1ccccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.