Using O=C(O)c1cnc2ccccc2n1, NC1C2CC3CC(C2)CC1C3 to produce O=C(NC1C2CC3CC(C2)CC1C3)c1cnc2ccccc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.