Using CCN=C=NCCCN(C)C, O=C(O)c1ccc2cc(C3(O)CCn4cncc43)ccc2c1 to produce NC(=O)c1ccc2cc(C3(O)CCn4cncc43)ccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.