Using CCCc1nc2c(N)nc3ccccc3c2n1CCCCC(=O)N1CCOCC1 to produce CCCc1nc2c(N)nc3c(c2n1CCCCC(=O)N1CCOCC1)CCCC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.