Using N=C(N)N1CCCCC1, CCCC(C(=O)OCC)C(C(=O)OCC)C(=O)OCC to produce CCCC(C(=O)O)c1c(O)nc(N2CCCCC2)nc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.