Using O=C1CCC2CCC1C2, Cc1nnc(NCCN)c2cc3ccccn3c12 to produce Cc1nnc(NCCNC2CCC3CCC2C3)c2cc3ccccn3c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.