Using O=C(O)Cc1ccncc1, CC1(C)C2CC[C@]1(C)CNC2 to produce CC1(C)C2CC[C@]1(C)CN(C(=O)Cc1ccncc1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.