Using CC(C)(C)OC(=O)N1CCCN(C(=O)c2cc3[nH]c(=O)c4ccccc4n3c2)CC1 to produce O=C(c1cc2[nH]c(=O)c3ccccc3n2c1)N1CCCNCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.