Using O=C(O)c1n[nH]c2c1C=CC(c1ccccc1)(c1ccccc1)C2, NC1CC1 to produce O=C(NC1CC1)c1n[nH]c2c1C=CC(c1ccccc1)(c1ccccc1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.