Using O=C1CNCCN1, O=C(O)Cn1ccc(NC(=O)OCc2ccccc2)nc1=O to produce O=C(Nc1ccn(CC(=O)N2CCNCC2=O)c(=O)n1)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.