Using CC(C)(C)OC(=O)N1CCc2[nH]c(-c3ccnc(NC(=O)c4ccccc4)n3)cc2C1=O to produce O=C(Nc1nccc(-c2cc3c([nH]2)CCNC3=O)n1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.