Using Nc1nc2c(c(N3CCC4CC3CN4C(=O)OCc3ccccc3)n1)CCCc1ccccc1-2 to produce Nc1nc2c(c(N3CCC4CC3CN4)n1)CCCc1ccccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.