Using O=C(OCc1ccccc1)N1CCC(c2nnc3cnc4[nH]ccc4n23)CC1 to produce c1cc2c(ncc3nnc(C4CCNCC4)n32)[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.