Using O=C1c2ccccc2C(=O)N1CCCCN(Cc1nc2c([nH]1)CCCC2)C1CCCc2cccnc21 to produce NCCCCN(Cc1nc2c([nH]1)CCCC2)C1CCCc2cccnc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.