Using CCCc1nc2c(N)nc(C)c(C)c2n1CCCCN(OC(=O)OC(C)(C)C)C(=O)OC(C)(C)C to produce CCCc1nc2c(N)nc(C)c(C)c2n1CCCCNO, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.