Using O=C(Cc1ccc(-n2cnnn2)cc1)N1C2CCC1CN(Cc1ccccc1)C2 to produce O=C(Cc1ccc(-n2cnnn2)cc1)N1C2CCC1CNC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.